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psha 308 it is
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2. If " believe it or not, a larger bullet is harder to stop." then a 45-70 firing a 300 gr bullet would make a better selection than the 270 firing a 150 grainer at 500 yards. Science says no. The 300gr would have approx. 45% of the 150gr energy. Less energy means less damage, less damage means less likely to kill.
Must disagree, energy formulas are science, how they are interpreted can sell a magazine or a gun. E= 1/2 x mass x velocity squared never changes. Opinions about how much E it takes abound and are worth just what you think they are..You know that the energy formulas are designed to sell magazines, right? A sedeately moving 300gr .458 has a lot more penetration than it's "formula" numbers would inticate. :winkkiss: Now hitting something with it at 500 is an accomplishment with any gun but a 500 yd shot on game is not something I advocate anyway, at least for myself.
They say "climate change" is science too. Bad science is still science I suppose. You can cook up almost any formula and apply it in a manner it was not designed for and it'll still be science.
Well now, it looks like hunting season is approaching. Good discussion.
My contribution to this thread is to get a rifle and burn up four-six boxes (yes, that's right....a hundred bucks) at the range over four separate sessions and at various long range distances. Then work on moving targets at shorter range.
Don't be a putz and simply "sight in" your .308/.270/7mm at 100 yards and judge that you are now "ready". I see lots of guys every year who do just that a no more. Maybe 10 of those guys don't need to do more. The other 40 do.
You need to master your rifle and your load. Ahead of time.
Thread Winner
You going to call ballistic tables bad science?!?
Cook up any formula? E=(1/2) x mass x Velocity squared is Newtonian, been around about 400 years, research the subject.
No.I don't even know how you get that from what I said. You mentioned interpretation and that's exactly what I am talking about. You have a penchant for applying the energy formula to a bullet's effectiveness on game. You said that when you refuted that other fella's post. The formula is what it is but it doesn't go there. There are other forces that make bullets effective at the terminal end and I know that those other forces have much more to do with whether he's DRT or running off into the sunset.
The other guy is right. Put your shot where it needs to go and that animal will drop. Finesse vs force, though a healthy dose of force won't hurt.
Will, you have made a wise choice IMHO. When one spends enough time looking over ballistics tables and recoil numbers they usually arrive at where you are.Thanks for all the feedback, guys. Didn't really expect this much info, but your replies - along with a ton of reading elsewhere online - is helping me get ready with theoretically book knowledge before I lay down the money and get some practical time with the rifle I end up going with.
2. Cost: How much more does good ammo cost, compared to the .270 (and what's a good deer load - heard Hornady 139 gr. SST might be the way to go)? If it's something like 25% or so more expensive, that might be a major point in favor of the .270 as I plan on shooting a lot to learn.
EDIT/UPDATE: Looking through the Shop Shooting Supplies | Reloading | Gunsmithing | Hunting gear — MidwayUSA site, I'm seeing such a ton of variation in costs between ammo of the same caliber (both .270 and 7 Mag) that it's tricky for me, as a newbie, to get a handle on this one. In a search for Hornady SST for the 270 Win and the 7 Rem Mag, both seem to be priced the same. Granted, I know there's a ton of difference bullet and grain loads out there, so this is where I'm over my head.
Some input here would really be appreciated.