Re: Rebarreling Advise?
10Truck,
I think it depends, if you have an itch then by all means scratch it! If you know you will shoot out only as far as 600 extreme maximum I would actually advise you do things a bit differently. But keep in mind, it already shoots good, so tossing money at it is dependant of if you Just Want to Scratch an Itch.
If it were me, and I knew I would be shooting short to intermediate range I would re-build the weapon a good bit differently.
-- 13 twist barrel. To use the Sierra 135gr SMK. IMR8208 XBR powder.
-- 16.5" Barrel and Suppress it. You live in PA right? Pretty sure suppressors are legal there. Keep in mind the suppressor adds a good bit of length to the barrel end of things.
That Sierra 135gr match king in 308 win will be a bit more tame on not only the shoulder, but easier to spot your shots as well. When you suppress it, it becomes near trivial to shoot from bi-pod and spot your shots. The 13 twist may seem slow, but it will be fully stable at -40F at sea level with that grain weight of bullet, and pretty reasonably stable for even the 155's. Now the 155's can make it to 1k pretty easy, but probably not so well out of a 16.5" barrel. I would say 800 with a 155gr and a 16.5" barrel would be 100% realistic as long as the 155's are kept to about Zero Degree's Fahrenheit shooting days or higher temps. Some folks might even tell you a 155 out of a 13 twist is fully stable, but no, it is not. As both ASL and Temp decrease a bullet gets harder to stabilize. Fully stable means Go Any Where Any Time and Just Do It. I tend to use -40f as my bottom temp as most Hodgdon powders in the extreme series tend to list -40 as the bottom temp. I am pretty sure for instance the new military 300 win mag ammo mk 248 mod 1 states temp stability as -40 to +165. Don't know about you, but I do Not really want to be out and about shooting at -40...
Good Shooting,
Gary
