.308
07-30-2008, 01:38 AM
#1
Thread Starter
Join Date: Jul 2008
Posts: 5
.308
Hi, i was wondering if any you guys have remington 700 sps varmit rifle in a .308 cause i am consering own buying one but the 12'' twist own the barrel got me confused if it made to shoot light or heavy bullets at the end the barrel?
07-30-2008, 06:49 PM
#3
Nontypical Buck
Join Date: Feb 2003
Location: Garfield NJ USA
Posts: 3,067
RE: .308
Let's compare apples to apples. To say a 308's ballistics are just under a 300 winmag isn't accurate. About the only way your going to consistantly get above 3000 fps with a 308 is if your running some pretty hot loads. The 300 winmag is right around 300 fps faster with every bullet weight when staying withing saami limits on pressures.
07-30-2008, 06:57 PM
#4
Nontypical Buck
Join Date: Jun 2008
Posts: 1,526
RE: .308
The .308 can be a fun caliber. I have had my gunsmith make up a load for me (I don't reload) with a 55gr bullet that performed well. I honestly do not know if a 1 in 12 twist is "designed" for something this small though.
08-04-2008, 03:35 PM
#6
Nontypical Buck
Join Date: Feb 2003
Location: Too close to Chicago
Posts: 3,337
RE: .308
Heavier bullets require faster twist rates to stabilize.
Too slow of a twist will result in yawing and pitching during flight, and will be manifested as poor groupings and keyhole shaped tears.
Lighter bullets need a slower twist rate.
Too fast and the bullets will weaken, deform,or get torn apart, sometimes resulting in core/jacket separation in flight if the mismatch is extreme.
I rememberthe relationshipwith a bowling analogy...
You have to put a lot of spin on the heavier balls to get themhooking where you want them consistently. Although we aren't trying to 'hook' bullets, I've never forgotten which way it works.
Having never reloaded or competed with a 308, I can't say I know which rate is optimum for the different weights available in the caliber.
Too slow of a twist will result in yawing and pitching during flight, and will be manifested as poor groupings and keyhole shaped tears.
Lighter bullets need a slower twist rate.
Too fast and the bullets will weaken, deform,or get torn apart, sometimes resulting in core/jacket separation in flight if the mismatch is extreme.
I rememberthe relationshipwith a bowling analogy...
You have to put a lot of spin on the heavier balls to get themhooking where you want them consistently. Although we aren't trying to 'hook' bullets, I've never forgotten which way it works.
Having never reloaded or competed with a 308, I can't say I know which rate is optimum for the different weights available in the caliber.
08-04-2008, 07:14 PM
#7
Nontypical Buck
Join Date: Jan 2008
Location:
Posts: 2,186
RE: .308
Twist rate of 1:12 is in the middle of the pack. Should handle 165 gr. +/- bullets at typical muzzle velocities just fine. However though the 308 Win. is my hunting cartridge of choice, I am no expert on internal (or external for that matter) ballistics.For a good treatise on the 308 Win., I suggest you search on "308 Winchester Cartridge Guide". This is a nice compact article on the 308 WIn. written a few years ago.
08-06-2008, 02:25 PM
#9
Join Date: Jun 2008
Posts: 3
RE: .308
I find the 165gr to be a tack driver in the .308 cal. You'll surely be happy with the purchase of a Remington 700 varmit. I do have to agree though with thndrchiken's post though. The .308 and .300 aren't even in the same catagory. Good luck with your decision.
08-07-2008, 07:44 AM
#10
Fork Horn
Join Date: Oct 2007
Posts: 203