DIY 44 Caliber - BIG BORE AIRGUN - Scratch Built Deer Hunting PCP at 200 bar for 300FPE - Homemade

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-----------------------Disclaimer-------------------
Fabrication Disclaimer:
Any time you are using a machine that cuts steel the machining forces or cutting surfaces can KILL YOU.
Pressure Kills Disclaimer:
I am not an expert or engineer. However I know high pressure air is even more dangerous. It can KILL YOU OR OTHERS AROUND YOU. I don't know anyone's ability or attention to detail. These are are critical for safety (your calculations, measurements, material selection or ability to use tools properly). I cannot give you enough information in youtube comments to warn you how to proceed or all the dangers or steps you must take for success (not hurting yourself). I ask everyone wanting to make an airgun to join a forum to research this for months before undertaking any project. Any questions/answers addressed about air gun fabrication probably will be missing a lot of critical information you need to know. Don't assume it is enough. Please look up how-to on www.gatewaytoa...
Or another airgun build forum. These guys can give you good information and review what you are doing for safety.
-------------------------------------------------------------
This is a ".44 caliber" (.429) airgun made from scratch (uses a modified Spyder Paintball trigger system and a cut down Chaszel 44 magnum barrel liner). Tube is 1" x .083 DOM steel, valve and endcaps are 1" 416, pins are Grade 8 or "better" SHCS with one very large one hidden by the trigger. All these pressure tube components were tested to 7200 PSI with no issues. Breech is 1" 416 Stainless with threaded barrel. Bolt/handle and hammer cocking handle are large Grade 8 or 12.9 SHCS. Bolt handle is 5/16" and rear breech bolt is 1/4" as recommended for safety.
Throated for up to a 310 gr bullet but it may need a little work for more FPS or maybe remain just a pipe dream. It may now shoot the 310 gr after a peek poppet and TP throat increase modification. As of 3/21 it shoots the 245 gr at about 740 FPS for 300 FPE and should do a little beter at 3500 psi. Round ball may break the sound barrier??
Last pic shows a recovered round ball from the range at home that expanded to .655". It takes about 210 pumps to fill it to 2900 PSI (start of shot string curve happened to coincide with 200 bar) and gets about 4-5 shots.
Please take high pressure gas serious. It can kill you or others around you.
If you point it at a deer it can kill that too. There is the benefit. Cheap deer, predator, turkey hunting (cheap but not easy). Overcoming objections: this is a minimal FPE deer gun depending on the whitetail and where you shoot it. I will be working on getting a little more power or a different one altogether.
Check out www.gatewaytoa... for more information about airguns and safety!
www.artofmanli...
;)
God bless

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19 сен 2024

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Комментарии : 130

@bigbirderbob3710 2 года назад

2021 deer hunt with the .58 caliber and the .44 caliber ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ipDxYnsqydE.html

@REVY01 Год назад

What trigger mech did you use for build? Is it a speargun trigger assembly, I want to know cos I'm making my own.

@kevincortes1190 Год назад

@@REVY01 sssssssssssssssssssssssssssssssssssssssssssssssssss222ss222ss2s222222w2wsss

@medismalkovic1054 Год назад

@@REVY01he used a spyder painball valve and all

@bigbirderbob3710 3 года назад

Added a peek poppet, increased throat, transfer port and bolt probe bore diameter and shot the 245 gr bullet at 742 FPS for 300 FPE at 3000 PSI. Have to do more testing. My > homemade < pressure tube will support 3600 PSI or more so I need to cast some 310 gr and see how fast the round ball goes.

@JETHO321 Год назад

I'm not sure what country you're in but if it's the US, a person without felonies can make all the guns they want (even powder burners) and even felons can make and own air rifles.

@trenamack2123 Год назад

Thanks i was wondering if air guns counted as off limits for felons .the one were seeing here reports like a. Cartridge gun

@Appachoppa112 7 месяцев назад

Cuzz America!! 🦅🇺🇸🦅

@كلام-ط6و 9 месяцев назад

I am from Iraq. I have just subscribed to your beautiful channel. Honestly, I will tell you that the best person I have ever seen making an air rifle is you. Although I have seen thousands around the world doing it, you are the best. Can you create a video with precise details as you make this powerful and beautiful rifle?

@loganhernandez7506 3 года назад

It would be cool to see a video of you building this or at least taking it apart and talking about how you built it.

@bigbirderbob3710 3 года назад

I posted another video ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4Qs-Z6QnsPk.html ) but I am limited by the extent of what I can show. Thanks for the interest!

@tonydavisbusiness 2 года назад

Awesome build!!!! Would love to see how you made it.

@Zion_98x Год назад

I want see it too

@BackyardDispatcher Год назад

@@Zion_98x me three

@leeboy8689 3 года назад

I have a new outlook on scooter handlebars that's genius

@whatisdoneinthedarkwillbeb9204 3 года назад

That is sick and it sounds nasty. That's truly a thing of beauty.

@bigbirderbob3710 3 года назад

Thats funny. I love your way with words! Its just a slapped together tool. God bless.

@whatisdoneinthedarkwillbeb9204 3 года назад

@@bigbirderbob3710 hey man it's what's on the inside that counts lol.

@tapthepope Год назад

@@whatisdoneinthedarkwillbeb9204 If we're talking about aesthetics I love the crude "diy" look, but you can tell this guy knows his stuff.

@REVY01 2 года назад

You should make a video showing step by step with measurements how to make one.

@degdeg4034 3 года назад

Amazing work. Also love the stock

@jasonnealey8325 Год назад

I recently built my own pcp as well , the air chamber holds 2200 pcp on a tiny resivour my 1st tune was pushing over 40 FPE but only getting 3 shots , Im down in the high 20s now getting 14 shots . I really like seeing what people are able to do on thier own RE : building your own PCP , I knew nothing at all about tuning or how to build with my only mechanical background being I know how to work on bicycles . I watched tutorials learned as I went and was super conservative on how high I would pressurize it 2000 PSI seemed crazy high and I had it a month before I pumped to the working pressure of 2200 PSI . Love to hear you just do a show and tell us How and what parts , talk about your airgun background, seeing you shoot targets is great you can see it's powerful but I would love to hear more about your build .

@noidontthinksolol Год назад

Be very carefull at those pressures. If thing go boom it will be very bad if you're close

@jasonnealey8325 Год назад

@@noidontthinksolol always pays to keep safety in mind , the unit I put on my 2240 is called a Safepac, you have to take the valve out of the gun then take the back half off this is the part where the CO2 cartridge pushes up against the seal then screw in place a CNC machined Aluminum tube , it can be safely pumped up to 2400 psi , if you are interested have a look by typing in Safepack installation , there is a machinist named Rob , AKA froggy airguns that makes and distributes these units . If you want to check out a horror story of a guy using the highpack system which goes together like any other pcp but has segments that are screwed together and then the valve itself is oringed and then Pinned with 2 or more screws. The major flaw in that system is the valve can become a projectile if something fails , in this case it did and shot the valve thru the Dudes Leg . His name is Randy and he was or is known in the airgun world. Type in exploring the PCP explosion. Randy definitely came close to death because he had the riffle pointed up and was target shooting just prior to it failing. Would have left a big hole in his head for sure . If you feel inclined check out my content my channel is about 12 or 13 months old.

@abramhelman7138 Год назад

this thing looks amazing, it looks like it was built from scooter handle bars, bottom half of a paintball gun and a pcp tank

@jesussoleno8817 3 года назад

Beautiful PCP gun, greetings from Colombia.

@bigbirderbob3710 3 года назад

In the eye of the beholder 🤔 Thanks

@yunielalfonso773 10 месяцев назад

Still working after all this time,me bad for ask but curiosity is high because you got nice project air rifle there

@ddairgun2470 3 года назад

great job... 👊👊

@bigbirderbob3710 3 года назад

You've got some big tubes too buddy! Merry Christmas.

@ddairgun2470 3 года назад

@@bigbirderbob3710 yes, unfortunately in my country i can only use up to 6mm but i love big bore. Merry Christmas...

@henriquemarques5746 3 года назад

O projeto valve homemade

@doming2127 Год назад

Wow I like your XF terapanther!!! Awesome!!!

@johnconnor6725 4 месяца назад

Very well done ! ! !

@randomidiot8142 3 года назад

I dare say wrapping your hand over a completely free floated barrel will cause poi issues. Very cool though, I need to finish my .32 pumper.

@bigbirderbob3710 3 года назад

You are correct. This was the initial testing and it was so accurate I havent added a barrel band. Maybe after the deer season (March). I havent been hunting again with it but I just have to be cognizant of hand placement. Its not a lift. My 44 mag revolver you can mess your thumb up if you put your hand forward next to the cylinder. On the other hand if I screw up on making the barrel band every shot could change POI.

@randomidiot8142 3 года назад

@@bigbirderbob3710 maybe the barrel band could allow the barrel to continue to free float and the band would just prevent catastrophic receiver or barrel damage like if you dropped it? I tried a couple different barrel band tweaks with my Marauder and I kept going back to completely free floating inside the band because it was giving me the best results.

@bigbirderbob3710 3 года назад

I have another big bore by a maker that has a barrel band with an oring. The o-ring moved out of the band last year and changed the POI. So Im a little cautious.

@pinocolada4254 2 года назад

How is that .32 pumper doing? That's the coolest thing i've heard in quite a while!

@randomidiot8142 2 года назад

@@pinocolada4254 it has been pushed aside by other projects, either out of personal interest or priority. The parts are still on the bench along with bits and pieces of an unknown number of other projects. I got the big bore bug a while back and assembled a pocket cannon ar15 that caught the eye of a friend, and since he's paying I'm doing a few more before I get back to the ever growing list of 'what would happen if.. hold my beer' projects.

@Sanch0000 3 года назад

Damn that thing is awesome

@bigbirderbob3710 3 года назад

Thanks. However I read: "According to RU-vid videos, all airguns are awesome and super accurate." Check out my other video less awesome but pretty accurate.

@ChimpPunck 3 месяца назад

Are you guys ever going to expand on this video or you just going to keep it as is

@user-hx2cm5ge1q 3 года назад

Weres the airtank from? At first I thought it was from a hpa handpump or is it from another gun?

@bigbirderbob3710 3 года назад

I made it from 1" OD x.083 ID DOM a513 steel tubing. As far as safety, it has a better theoretical safety margin than most PCPs. I made the internals to fit (.8295" or so). The pins (screws holding the end and valve) and placement should provide a better safety margin too. Calculations tell you the pressure you can probably tested it to. So I used a hydraulic oil hand pump to test at 7200 PSI and it sat for a while. I then replaced pins for safety. Tube is fairly easy to make so I am stating all this extra just in case someone makes one based off a short description. It should be done safely cause you can kill yourself. FYI for people with a mini lathe, I did this 1" OD x 30" tube and have done 1.25" OD tubes on my 14" mini lathe with only a 20mm spindle bore but it takes a "steady rest", working off the far end of the lathe to finish the ends flat with a file (oh no!). If you work on the chuck end you need an insert screwed into holes you are going to make in the tube ends anyway. If you want to do this just realize you must have or have access to a "low standards meter".

@user-hx2cm5ge1q 3 года назад

@@bigbirderbob3710 thanks for the reply. So I guess the to ends are held on with screws or pins? That's the. First time Ive seen that done. But it does make sense and seems safety than threads.

@bigbirderbob3710 3 года назад

Yes. They are gr 12.9 high tensile strength Socket Head Cap Screws. The Discovery airgun and Maurauder. among others, use screws to pin the valve. I dont have a way to thread such a large diameter and length tube accurately or I would use that method.

@sixoffive Год назад

Very cool, louder than I thought it would be. Maybe an integral suppressor on that next barrel?

@DIMZEROCENT 4 месяца назад

Powerful airguns are very loud and do need quite a long barrel to be efficient. It makes it difficult to add a suppressor with a real noise reduction effect without adding much length to an already long gun. I do own a PCP from a well known brand with a "suppressor" covering all the barrel length.... this airgun is one of the loudest i own... IMO this type of suppressors is more a "llok good" thing than an efficient solution.

@sixoffive 4 месяца назад

@@DIMZEROCENT Thanks for the info, I’m not very familiar with modern air guns and assumed it would be similar to firearms. Not that I have much more knowledge about suppressors in general. I think I read that air gun suppressors aren’t NFA items, no tax stamp.

@mrdevil1692 3 года назад

Full review

@catherineharris4746 10 месяцев назад

Outstanding!💥👍👍👍

@felicerigari7805 Год назад

Ti chiedo a quante atmosfere lo fai funzionare ??? Grazie

@Biokemist-o3k 7 месяцев назад

Great video my friend!! New subscriber.

@PraetzelProjects 3 года назад

Will you be making a tutorial? I would be interested to know build price

@bigbirderbob3710 3 года назад

Thanks for the question. I would advise anyone wanting to make an airgun (no matter what power) to join a dedicated forum. I am not an expert, rather a bumbling tinkerer. I try to take a lot of time for safety however. I'm not even sure I could convey even the safety aspects in a video let alone a build. And then Id have to play it at 8x speed cause I do it piecemeal over maybe 6 months. Its amazing how many "experts" there are on RU-vid. Real experts on forums will tell you when you are doing something wrong. RU-vid isn't set up for that type of feedback. However this airgun is pretty simple. It is similar to a QB78 with a pinned valve and fill end for HPA. Google "Big Bore Higgins" to read about bumbling a .308 caliber that was made from a precursor of a QB78. The parts cost very little but equipment and tooling will run into the thousands. If you purchase $25 worth of tools and supplies here and there you will fool yourself into thinking it is not much. Thats how I did it. A mini lathe will be at least $400 and tooling will be at least that. There are parts available online for more of a lego build though.

@PraetzelProjects 3 года назад

@@bigbirderbob3710 I am not really interested in building one I was just curious. I have built 3 airguns one in sub 3fpe for airsoft use one in 10fpe for close range posting and one in up to 200fpe for anything from mice and rabbit and squirrel with shot and deer with round balls. Thanks for the detailed response!

@bigbirderbob3710 3 года назад

Oh ok. Sounded like you wanted to know about how to make one. I saw your channel. I like your fireworks! Pretty cool.

@PraetzelProjects 3 года назад

@@bigbirderbob3710 thanks!

@paultrimble9390 3 года назад

I have dB 200 unimat mill/lathe would that be enough to build with

@life_of_riley88 3 года назад

Hmm I've got an old Spyder laying around. . .and a hand pump.

@bigbirderbob3710 3 года назад

You're almost 1/2 way there! ;)

@life_of_riley88 3 года назад

@@bigbirderbob3710 I won't ask for all your build secrets, but I'm guessing that Spyder/stacked tube blowback poppet valve is a pretty efficient air mover at high pressure?

@bigbirderbob3710 3 года назад

I use the Spyder for the trigger only. I actually replaced the sear with a 1095 alloy sear because the stock sear is made for semi-auto and allows the sear to move forward (sear has an oval hole). The valve is like a QB78 but larger diameter and elongated. I have pictures on the forum when I made my .308. In my opinion it is a better valve/tube design for big bore than a crosman. However, it isnt very cutting edge and I am pretty sloppy at macining but try to be very safe. It has a much longer throat because I have my spring up front (antiquated threaded spring retainer like a QB). Sometime I want to make a shorter throat and rear spring.

@life_of_riley88 3 года назад

@@bigbirderbob3710 Thanks for the reply Bob, I'll have to dig around the forums and see if I can come up with your build. The QB78 style valve is interesting, as I suppose for simplicities sake, darn near everything has been done with one of those. Very cool, and thanks again for sharing.

@bigbirderbob3710 3 года назад

Try googling Big Bore Higgins. You may only get text unless logged in. My safety caveats in the description above apply. Please read those first. Don't go making an airgun without a lot of research and time to absorb what you need to know (a warning for anyone).

@Zion_98x Год назад

Bro where is the tutorial making video

@CleodonAgraBrandaoQueiroz 9 месяцев назад

You are really great!

@Rahmathuntingvlog Год назад

Waow amazing 👍

@michaelporter4435 7 дней назад

I will like to see how

@madonanggara2981 Год назад

Mantap gan sayang bahasa saya gc tau

@robinkhadka8359 Год назад

Where could i find this type of pump?I've homemade airgun for hunting use,pump is really problem for me here so i need a strong pump reply me

@bejangkarhunter5878 Год назад

Kereen gun nya bro 👍

@J-Motos-Garage 2 года назад

is that a scooter handlebar as a stock?

@shyamboruah7613 3 года назад

How to make this gun

@bigbirderbob3710 3 года назад

See response above or below or wherever RU-vid puts it. Thanks for your question.

@shyamboruah7613 3 года назад

@@bigbirderbob3710 who are you living bro

@理塘纯真 Год назад

hello dude i like your work👍 so much i would like to pay for a drawing of this gun if i can

@gaston01000 11 месяцев назад

Letal Range?

@trieutuananh6758 Год назад

in my country with a 12" barrel can reach 150 yards, even though it's strictly prohibited

@كلام-ط6و 9 месяцев назад

What is the air pressure in psi?

@jokipredator4925 Год назад

Nice

@onciudan4571 Год назад

Super

@boymugnaadventure2967 2 года назад

New subsceiber sir

@monstermonster3814 Год назад

Beast!!!

@generalbasharal-assad3355 Год назад

How many PSI is your gun?

@sinhvuongvan8507 Год назад

Giá bao nhiêu vậy

@luwuksniper1920 Год назад

Luar biasa👍👌

@rageseb_x_0785 Год назад

That's a star wars rifle

@arifsutoaji304 Год назад

👍👍

@amoraapriliaagustin5468 Год назад

Sing like

@k.josephjoseph2359 3 года назад

how is to make up step by step

@bigbirderbob3710 3 года назад

Thanks for the question. Check my other video. I can't go into all the details for safety's sake but if you look at a QB78 or a Crosman 180/400/160 it is about the same parts. They arent off the shelf parts but you can create them on a lathe. Please be careful. Join a forum like Gatewaytoairguns.org and get all the details on building an airgun. There is a ton of safety details that need to be read up on. I'm still learning. I replaced the side pins on this one because the placement was not good. Scares the crap out of me when I put together. If you do it wrong you have a 800 fpe projectile (valve or bolt or fill end) coming back into your face!

@vijaykorvekar1009 3 года назад

How did you make it

@bigbirderbob3710 3 года назад

Copy of other post: Thanks for the question. Check my other video. I can't go into all the details for safety's sake but if you look at a QB78 or a Crosman 180/400/160 it is about the same parts. They arent off the shelf parts but you can create them on a lathe. Please be careful. Join a forum like Gatewaytoairguns.org and get all the details on building an airgun. There is a ton of safety details that need to be read up on. I'm still learning. I replaced the side pins on this one because the placement was not good. Scares the crap out of me when I put together. If you do it wrong you have a 800 fpe projectile (valve or bolt or fill end) coming back into your face!

@vijaykorvekar1009 3 года назад

@@bigbirderbob3710 I don't want to know about the barrel ,but I really want to know about it air tank and regulator

@chetrinerine9377 Год назад

I like it,can pos in malaysia

@joojoo1982 2 года назад

Hi brother Are you sales this gun?

@bigbirderbob3710 2 года назад

No. Just get a Seneca 44 or 50 and you'll be strides on your head.

@amoraapriliaagustin5468 Год назад

Jossd

@gregmcb5305 2 года назад

Why 44cal instead of 45?

@ajstrobus Год назад

why 45cal instead of 46?

@sixoffive Год назад

Yea, you know 45 has some options that 44 won’t, bullet wise. Like choices in light weight pistol bullets up to heavier rifle bullets. I wonder about sabots like used in black powder. Nothing wrong with 44, it works.

@STIZEN9 2 года назад

your other video link is "private." Can you PLEASE bless me with the details, Id like to build one, and will not hold you responsible in any way sir. I want to see in internals at least. GB! God Bless

@bigbirderbob3710 2 года назад

I had some copyright issues. If you are looking to get into building or modifying, definitely get on to an airgun forum like Gateway to airguns. There is a lot of reading there. Then start small with modding a QB 78 or Crosman (QB 78 makes a better platform due to less holes). Mine is similar to a QB78 internally. Be careful. I uploaded another video but it is age restricted due to deer hunting.

@Vo_d_kontra_o_norMAL Год назад

please can you Help me with the information i need to build my 44 Magnum revolver ? The information os about the caliber/barrel strenght materials

@toxicmatrix1337 11 месяцев назад

Is that a spyder trigger frame😂

@dimen6570 2 месяца назад

The great khali🤔

@k.josephjoseph2359 3 года назад

show ad step by step homemade

@bigbirderbob3710 3 года назад

Thanks for watching. Have you ever watched the Bean "Do it yourself" episode: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Z68t7NqxWis.html This pretty much matches the way I work, my preparation, measurements and fervor. Only Bean can get away with showing such haphazard DIY.