Basic Ballistics

[@TheMikeWash]

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.

[@markandsamafterwork]

Cheers, Mike thanks

[@DanielBoone337]

"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...

[@markandsamafterwork]

Yep, Cheers

[@paulsimmons5726]

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!

[@markandsamafterwork]

Thanks Paul, lol, Cheers

[@arekhandiabruno]

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!

[@markandsamafterwork]

Cheers Bruno, thanks

[@willo7734]

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.

[@markandsamafterwork]

Cheers Will

[@SnakePliscan]

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.

[@markandsamafterwork]

Glad you liked, Cheers

[@Happy-Trails-To-You]

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.

[@markandsamafterwork]

Thanks Garry, Cheers

[@TuyenQMai]

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

[@markandsamafterwork]

Cheers Tuyen, thanks

[@jimburnsjr.]

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.

[@markandsamafterwork]

Thanks Jim, glad you liked, yes some of those topics will be coming, Cheers and all the best.

[@ashleynicely1046]

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.

[@markandsamafterwork]

Lol, Thanks Ashley, Cheers

[@Hilla085]

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

[@markandsamafterwork]

Lol, Cheers

[@mikeamos5260]

Cheers from Canada I enjoy your and Sams videos Thanks

[@markandsamafterwork]

Thanks Mike, Cheers

[@Leverguns50]

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

[@markandsamafterwork]

Cheers

[@bobwiese6128]

Well done my friend! Cheers

[@markandsamafterwork]

Cheers

[@AisAL321]

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

[@markandsamafterwork]

Cheers

[@rolandharrison579]

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

[@ericwilliams2317]

Hi mate. I can give you some input on your question if you like, based on 25 yrs + target shooting. For a .308 I have 2 rifles, both with a 1:12 twist (1 rotation every 12 inches of barrel length). These will shoot "Target" type bullets accurately up to about 175 -178 grains in weight out to 1K yards. One has A 32'' barrel, the other has a 28'' heavy profile barrel. If you want to shoot heavier bullets you will need more twist - say, 1:11 or 1:10, but you'll increase felt recoil. If you want lighter bullets, then you'll get away with 1:13 twist. As for 6.5, I also have a 6.5 Creedmoor which is a cracking rifle, firing 140 grain, long slippery bullets (Nosler RDF's) very accurately out to 1200 yards easily (still supersonic at that distance) through a 1:8 twist heavy barrel at 26'' long, which is pretty much the optimum length for this cal. Also, recoil in this cartridge is fairly tame by comparison to the .30 cals. If you want to go for full weight 6.5's like 150 grains, then you'll need about 1:7 -7.5 ABOVE ALL, MAKE SURE YOU USE CORRECT POWDERS & SAFE POWDER CHARGE WEIGHTS. I CANNOT STRESS THIS HIGHLY ENOUGH!

[@rolandharrison579]

@@ericwilliams2317 Thanks for the advice. This is what I was trying to find out. Appreciate your feedback and I totally understand correct amount of powders. Thanks again as what i needed to know.

[@markandsamafterwork]

Thanks Roland, well I see you have some good answers already, I will do more videos in the future to help. Otherwise the basics are, read what the manufactures suggest, bullets have information on the packet or of there web site, minimum twist, optimum twist, etc, powder manufactures have recommended loading data with speeds v powder weight v bullet weight in a set barrel length, and then as always ask what guys in your area, club are doing, all that will give you a real place to work from, all the best with your endeavours, Cheers and all the best.

[@rolandharrison579]

@@markandsamafterwork Thank You for replying. I didn't even consider looking at manufacturers information. I assumed it was one of those dark arts that took years to learn from shooting and shooting more. Eric Williams was kind enough to also reply and give me a head start and I will now look in these other directions you have given me. As I am looking at getting my first HV rifle for 1,000yards shooting, this will get me off on a good footing. Thanks and keep up the great videos.

[@markandsamafterwork]

Cheers

[@aussiesteveakastevecallagh2280]

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

[@markandsamafterwork]

Thanks Steve, Cheers

[@hairyscary8511]

Very interesting stuff done in the k.i.s.s method so anyone can grasp it👍🏻

[@markandsamafterwork]

Cheers Man

[@semperfi6288]

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👍👍

[@markandsamafterwork]

Thanks Robert, glad you like, Cheers

[@timmcfarland3311]

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

[@markandsamafterwork]

Thanks Tim, glad you liked, Cheers

[@triptideom]

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!

[@triptideom]

The A/H frame bullets like the Nosler Partition are a distant second place, but nothing hits game like Barnes solid copper.

[@markandsamafterwork]

Hi Tom , thanks for your comment, yes there are many details in all forms of these sticks that go bang, also I don't go too much into terminal ballistics as for one thing it is not something I have the most experience in, but also the folks that run the platform are not so straight forward as to think simple logic and real ethics will be applied. But you can be sure that I will always try to put forward real ethics and the need to learn and understand what you are doing, to help do it the best way you can, Cheers and all the best.

[@triptideom]

Very good, Thanks. The way you explain things leads me to believe you use observation and reason to lead you to conclusion. You're right, some will make unreasonable decisions even when presented with all evidence to the contrary. Here's to hoping logic and ethics find those who will use them to good. Thanks again.

[@markandsamafterwork]

Cheers Tom, thanks

[@ridin1720]

Good work guys.

[@markandsamafterwork]

Cheers

[@neumon6912]

Fasinating Subjekt. Things go up things go down

[@markandsamafterwork]

Yep, Cheers

[@johnblythe8229]

Great speak professor.

[@markandsamafterwork]

Lol, Cheers John, thanks

[@HJPreen]

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

[@markandsamafterwork]

BC's can be all over the place, Hornady tends to be a little generous with there numbers, but you will know that when you start comparing your results with what should have been by their numbers, Cheers

[@robinepps7274]

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

[@markandsamafterwork]

OK, probably going to push the 30 cal before we go further with the .338, but we'll see, Cheers

[@Win94ae]

Very informative; thank you!

[@markandsamafterwork]

Cheers

[@richgrose3308]

has there been any progress on your bullet design?

[@markandsamafterwork]

Ready for testing when the season arrives, cheers

[@phil20_20]

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

[@markandsamafterwork]

Lol

[@JairoBarcenasPhotography]

thanks

[@markandsamafterwork]

Cheers

[@shinplayzproductions8107]

"we learned ballistics in school fascinating subject"

[@markandsamafterwork]

Awesome, Cheers

[@johncitizen8712]

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

[@markandsamafterwork]

Yes, well correct and what is normally spoken are not quite the same, lol, Cheers

[@Dreamometry]

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

[@markandsamafterwork]

Correct

[@coneheadzombie7627]

I have to tell Zomboss this

[@markandsamafterwork]

Cheers

[@gilream]

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

[@markandsamafterwork]

Lol, cheers

[@hairyscary8511]

Throw a broomstick 50m wow you're in the wrong sport you should have a plethora of gold medals in javelin lol..so where do I go & watch you throw said broomstick😅

[@markandsamafterwork]

Lol, Cheers