Quote: The basic formula in physics is F = M x A. Where M is mass, A is acceleration, and F is force. When a projectile hits something the A is decelleration. How much force there is depends upon how fast the mass slows down. How deep it will penetrate depends upon how fast it will decelerate. Somewhere in all that is a better way to describe killing power, but I can't figure it out. People who do wound analysis say that what is important is the volume of the hole left after the bullet.
Actually mike, it is the BITRP&ID formula. Bullet in the right place and its Dead formula.
The laymen call it shot placement.
" People who do wound analysis...." once again, statiticians basing theories on hypothetical numbers. ( or foot pounds).
Well the people who do wound analysis base a lot of what they do on how fast things die as related to the hole the bullet left. It was a study that was done because it was found that the large expansion we have all seen in the photos where the bullet is just past is not as relavant as the hole when the bullet is long gone. That is all that is about.
I do most of my deer hunting with a 270 and wallmart 150 grain ammo. It is round nose and leaves a great wound channel. Use a 308 or 7mm-08 for hog hunting. The 308 is walmart 150 grain coreloc. Last time I had to track a deer was back in the 80's sometime, and I was using a marlin 30-30.
"The 45 grain load of H414 would be a good starting point. With a long-throated rifle a lot of them will take 50-50.5 grains with a 160 Nosler in a Win. case (Rem is smaller). these will go 2800 fps from a 22 in. barrel and is a great load."
A question: Why bother? I would start and only work up to a load that printed where I wanted it in my rifle. I read just a few nights ago that the Spaniards used the 7x57 with a long heavy bullet, just like RA stated, and gave the US soldiers what for in Cuba. And I think the ammo they were using was about 2300fps! Work up to a load that shoots well in YOUR rifle, not mine or the guy in the next county, and does so with as little recoil, wear and tear as possible. If you are going to go after game no larger that whitetails and the like, rest assured the 7x57 will get the job done. Larger game, premium bullets and as hot as you can stand if you use the 7x57. And don't laugh, the Swedes say anything bigger than the 6.5X55 is overill for moose and they shoot a lot of them. I've posted up before that the biggest elk I ever personally saw on the ground was killed with a 32 Winc Spec - and the 7x57 wil surely out perform this old trooper.
And there is in fact something about the long, pointed bullets that work wonders. A long time ago, someone (I wish I could recall who did it!) wrote an article on 'brush guns' by shooting them through a hedge to see what deflected and what didn't. He used such calibers s the 45/70, 35 Rem, etc that have a reputation for plowing through and getting to the target as well as 30/06, 270 and the like. As I recall the 7x57 was either 2nd or 3rd and the winners were such calibers as the 6.5x55 and the 6.5 Mannlicher WITH LONG HEAVY BULLETS! Surprised a lot of folks.
Good luck with the project � and you might well wish to go and try O�Connors favorite load with the 7x57 � it is not a lot different than what Ray is suggesting � I think he used IMR4831 but would not try and quote without checking the data one more time.
Posts: 3742 | Location: Moving on - Again! | Registered: 25 December 2003
Trap, This is for a sheep rifle, all right, but the griz can be found at lower elevations, and I do a lot of my hunting alone. I want the best load that i can conger up for my own protection. (I was run over by a dead griz in close quarters 25 years ago. Don't ever want it to happen again) Have been shooting 139gr at 2800 for a number of years, but there are much better 160gr bullets available (or even 175gr) that I would just love to use if i can keep the velocity in the 2700-2800 neighborhood. Will try the 414 to see how close I can come. Incidentally, has anyone here tried the Hornady Interbond or the Nosler Accubond bullets ?? Both claim very high weight retention while still mushrooming ok. Might be something there..... dick ........ PS, Trap. I have one of the early speer paperback reloading manuals that came with my Rockchucker long ago. Jack O'conner had an article or two in it and pics of Eleanor with some plains animals... and the 7x57 that you refer to. WOW.
Posts: 84 | Location: alaska | Registered: 10 November 2002
