Basic Ballistics 

"Dont stick your arm out the window at a 100mph" it's kind of sad we're at the point people have to be told these types of thing... LOL Been binge watching all these videos in the deer stand I love how you break all these things down!!! Good stuff brother thanks for all you do...

16:13 „size matters...“ was there a little smile? 😄

Mark and Sam - you're the best. Nobody comes close to how good of a job you do with these videos. Thanks for another great video.

Great video touching on many key points and the objectives too. 12:15 "The larger a bullet is verses its caliber the more spin it needs" this part of ballistic's ... twist rate and stability, i found most fascinating and rewarding as part of learning how to get the most out of my handloads when making bullet choices.

Very concise and easy to understand explantations. Any non-gun person would be able to study this presentation and have a good basic grasp of the concepts covered. Great job, Professor!

I came here as a surgeon seeking to make sense out of gunshot wounds I manage from time o time. Thank you MarkandSam Afterwork for making this happen!

Very good talk. Like everything else in life ballistics is more complicated than you might think when you first look at it. Smaller/faster doesn’t always equal better and you have to find the right balance of weight, shape, spin and speed for your needs. After I learned that I feel like I finally started to “get it” when it comes to reloading.

Another excellent video, Mark. Great to hear someone explain shooting and ballistics in scientific terms. Your explanation and examples are spot on and it is clear that you understand significantly more about shooting extreme distances, than simply aiming and pulling the trigger. Keep up the good work.

Thank you Mark and Sam. There so much to be learn you guys before I can pull the trigger.

Excellent as always...lets hear about ogive, ackley improved shoulders, compressed loads, and bullet jump...anything else you can think of that we all know you're qualified to talk about.

Thank you for this video Mark. Keep up the great content.

Great stuff Mark thank you for taking the time to share your knowledge great subject and very well explained Steve.

Cheers from Canada I enjoy your and Sams videos Thanks

Well done my friend! Cheers

Really enjoyed your video didn’t really learn anything but I really enjoyed the way you explained it, I have a hard time explaining it to people

Very informative thank you. I noticed a big difference in my .308 going from 175 grain burgers to 185 grain burgers when I was shooting one mile

Good work guys.

Very informative; thank you!

Another all-time great video on a subject we all need to know explained in plain language as only you can do it, Mark. I'm impressed. You're the Donald Trump of shooting, re-writing the book. Thanks for a very informative effort.

I could be mistaken but I don't think I heard you use the term "crossectional density". You did a very good job of explaining it, thanks for the education. The way it was explained to me in the military is if you take a cardboard projectile the same shape and size as a conventional projectile and fired through a rifle and it held it's shape it would almost be like shooting a cotton ball at a brick wall because of the air resistance. The way to explain B.C. and crossectional density and combine them is if you took a cotton ball 6" in diameter and fired it out of a cannon at 3,000 fps it might go 75'. Take that same cotton ball and compress it in to a sleek 240 grain .308 caliber Boat tail now it's going miles. Thanks for the great content mate. Watching from the U.S. keep it up👍👍

Great speak professor.

Fasinating Subjekt. Things go up things go down

Hi Mark. Another great video. Quick question. Im also using Strelok Pro and was trueing my trajectory the other day. I have a lab radar like yours but Im relying on the boxes BC. How accurate is the BC on the box. I use Hornady ELD match and is that BC good out to say 1km or does it change with speed. Thanks Mate

I would like to see you do a video on the 33xc!

Thanks for the video and observations! An incredible amount of great information here. Too much misinformation out there. Very few vocal keyboard warriors understand the difference between internal, external and terminal. The most common comparison i see out there is, "...the 300 Winmag and 7mm Remag have very similar ballistics..." haaha The animals also appreciate you pointing out that this kind of shooting isn't happening at ethical hunting distances. THANK YOU!!! Ethical hunting distances are relative to hunter, and obviously varminting is different, but, my ethical hunting distance, for me, is the distance I can hit a 6" circle from, every time, off hand, which changes with rifle, OR, the distance at which the bullet no longer performs ethically. Whichever is closer. When you're dealing with a big-bore brush cartridge, like the 45-70, you have lead and copper technology similar to pistol bullets, designed to punch through bone even under 1,800fps. Pointy rifle bullets are different, but this new ELR/ULR movement in the gun culture sees bullet makers like Hornady, Berger and Sierra making "long range" hunting bullets and ammo, and three things are happening: _1-folks that don't know any better buy this ammo, because new bullet technology should be better than old, right? _2-folks try to shoot game with these bullets at ethical hunting ranges. _3-folks try to shoot game with these bullets at unethical hunting ranges When those bullets hit a gel block between 1,800 and 1,300fps they look like they perform wonderfully, just like a self-defense hand gun round. But, 8 out of 9 folks shot with a pistol survive in the US, plus, better than 85% of vital shots have to go through a rib, and if the animal moves a little right when you shoot, that bullet may have to overcome front leg or shoulder bones. At any distance, when these thin jacketed hollow-points, plastic tipped or not, hit bone, they turn to jacketed dust. The wounded animal escapes to die unethically or survives with a poorer quality of life. At ethical hunting distances these bullets over perform, if they miss the ribs, expanding too quickly maybe the animal dies, eventually, maybe the bullet's energy just knocks the animal over or knocks the wind out of them, partially injuring one lung, leaving the animal to slowly bleed to death or suffocate, maybe hours later if they escape. The bullets only do what they're supposed to under 1,800fps, if they don't hit a rib. When it comes to "more efficient" cartridges like .243, .270 and 300Winmag, how far does a bullet travel before it's that slow? Way farther than a reasonable person would ethically shoot, if they knew better Once you've seen an animal bowled over by Barnes TSX solid coppers, everything else becomes unethical, comparatively. Thanks for entertaining my long-winded comments, haaha... I know this is beyond the normal scope of your channel, but I'd be interested to hear what you know/believe/think. Maybe nobody beyond me wants to know, but I think, in the information age, with bullets that are perfect for every job, there's no excuse for using the wrong stuff. But, capitalism; now that people are buying this crap, it's not like the manufacturers are gonna stop putting it on the shelves. In related news, have you noticed that a few of Berger's "long range" "hunting" bullets have a higher b.c. than their target bullet of same caliber and weight? I've seen a few guys featured on LRSU using them with success. Hilarious. Thank you, again!

Great Video...As Andrew Barbara said below... Exactly my request as well. I'm looking at getting a rifle and I wanted to understand better the relationship between bullet weight, rifle twist and barrel length to get an optimum rifle set up from the start for shooting to 1,000yards (UK). Say for example a .308 and 6.5 calibre - what length of rifle barrel and twist rate would be appropriate for a given bullet weight at 1000yards? Any videos on this would be much appreciated. Thanks and keep the videos coming as very informative. Cheers

has there been any progress on your bullet design?

"we learned ballistics in school fascinating subject"

Which weighs more, a pound of feathers or a pound of gold?

I have to tell Zomboss this

When I'm teaching firearms to Air Force Cadets and they say "bullets", I always say "No - they're 'behind' the target"......................

45-70 & 45 LC do not take same bullet. .458 VS .452

Some idiot will probably stick his arm out of his car at 100 MPH.