Breaking Down The Transonic Barrier | External Ballistics

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A full breakdown of bullet flight through the transonic barrier. #externalballistics #ballistics #longrangeshooting #longrange #precisionrifle #precisionshooting #supersonic #transonic #subsonic #extremelongrange #elr #sendit #submoa #lightsout #bullet #rifle #shooting #accuracy

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Опубликовано:

15 апр 2020

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Комментарии : 17

@desert-igor 2 года назад

thanks for the video, a lot of confusion out there regarding ballistics, people like to market things as either supersonic or subsonic but they completely ignore the in-between some places you will read subsonic is anything below 1100 ft/s and others 900 ft/s

@iltrmb 2 года назад

I noticed a box of 9mm is rated at 1150fps muzzle and 1095 at 25 yards, which goes from supersonic to subsonic. Ocassionally I see keyholing on paper targets at the 25 yard range, which means the bullet is tumbling. I was wondering about 9mm accuracy as it transitions from super to subsonic, but you commented about short fat bullets normally do well in this range.

@jimmyerasmus8257 4 года назад

Keep up the great work. This was my reason asking you the twist you running on your 7 Saum. I am planning my 7mm build and looking at doing 7mm - 300 wsm shooting the heavy high bc like 195 Berger. My next question would be barrel lenth. As long as possible to chase velocity but like 32 inches. But when is long to long?

@gunfather83 4 года назад

I'm running a 28" on my saum now and I run at 2950 with the 180 and 185 and that's not pushing it at all. It's just the best accuracy node. My plan with the next barrel is a 30" I should be able to be around 3025 with the same accuracy if everything goes as planned. Idk if how much you would gain with the 32 but I do know for sure that I have just a small amount of unburned powder with the 28" due to the muzzle flash and I run a pretty slow powder with h4831

@jimmyerasmus8257 4 года назад

@@gunfather83 interesting thank you very much. So you think I should go for 30th inch?

@gunfather83 4 года назад

@@jimmyerasmus8257 I honestly cant say. I imagine you will be running a slow powered and 10gr more (70 compared to 60) than a SAUM so I'm sure there will definitely be some benefit but I can't say how much. But more velocity is better than less in almost every case so I would go for it if that's what you want. I really like the 7mm-300wm. Its definitely higher velocity than the saum. My SAUM is built on a long action and my original plan with the action was the 7-300 but back then it wasn't as popular and I was going to have to buy my own custom reamer and it was going to be an extra 550$. Let me know how it turns out if you would. I'm still really interested in that caliber. I think my next build is going to be a 300RUM.

@jimmyerasmus8257 4 года назад

@@gunfather83 Thanks appreciate your prompt response always and love your channel especially your shooting skills. I am going for the 300 wsm because of case volume and availability here in SA. Keep up the great work!

@gunfather83 4 года назад

@@jimmyerasmus8257 oh I thought you said the 7mm-300 win mag. I miss read. The 300wsm is also an awesome caliber. It's a little higher velocitie and I'm pretty sure its about the same amount of powder.

@MsHojat 2 года назад

How well do .300" BLK go through transsonic transition? Like assuming there even are transsonic rounds for it. (There's supersonic and subsonic, so why not?)

@TheParkingLotGarage 2 года назад

This may help you out m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lXODyVnE_Dw.html

@destructo6745 2 года назад

Fighter jets aren't typically flying at or above the speed of sound near populated areas. Sonic booms rattle windows and generally piss folks off.

@gunfather83 2 года назад

Yeah thats probably true but where I live in the middle of no where 30 min south of a military base, when they fly over my house the windows rattle and we have to look 3/4 of a mile ahead of the sound to spot them.

@hawaii7569 4 года назад

Think Litz may know the answer to your question?

@gunfather83 4 года назад

Oh I have no doubt. There's not many questions that I have that Litz doesn't have the answer too

@SZINNAPALM 3 года назад

what you mean a flat nosed bullet gives less of a problem in flight than a cone shaped bullet, please share proof of this reference, cause I dont beleive it, so I would like to see it

@gunfather83 3 года назад

Flat and round nose bullet stabilize easier than spitzer bullets of the same weight due to bullet length. Its common knowledge amongst long range precision shooters. You can do your own home work on the subject. You won't find anyone with real knowledge that will dispute this fact

@oscarbear7498 Год назад

It partly has to do with how it bends air , the flat nose has a bit more drag that the air clamps down on the side of the bullet once it goes around it, it also has more mass which translate to more momentum (meaning it wants to keep in its line of motion) theses 2 things help. Vs having a lighter bullet with less momentum and a more aerodynamic bullet that is more dynamic , meaning it goes with the flow better, buuut if that flow is turbulent in transonic , that flow is wonky and its dynamic towards that Even if it's less favorable to you.