Originally Posted By: NWShooter69nice score.I have a rem 700 cdl in the 257 and love it. knocks the snout out of deer and totes waaaaaaaayyyy out there. My load is the 110 accubond
over a pile of RL22. I was told by a very knowledgeable guy at the range you can reform 7mm rem mag into the 257 and though just a bit short works fine. I haven't tried it though.
Use Winchester 264 brass if you can find it, it forms perfectly just running it through the F.L. sizing die. I use Lee Sizing wax as a lube. I had a reamer cut for using the 264 brass with it's tad bit shorter neck and zero freebore. 100g at 3850 shooting 3/8" groups and smaller were the norm, and R#22 rules the day. Loads may be different between Win 264 brass and Weatherby brass, so don't assume anything work up and be safe.
I had great luck with 100g Partition, 100g Hornady Flat base, 100g tipped triple shocks, and 100g Nosler ballistic tips on deer, with all these bullets shooting sub 1/2" groups in my zero freebore chamber. A zero freebore chamber will of course not Chamber factory ammo.
The zero freebore chamber also shot the 115's at 3630 fps into groups .300-.375 using R#22.
Recoil with this cartridge and a muzzle break is wonderful, seeing the bullet impact on the deer. How many times have you ever seen the water fly off a deer and a bullet hit the dirt on the off side at the bullet's impact.
I thought that I would upgrade to a custom 7 STW shooting the 120 tipped triple shock at 3850 but recoil is much more, not so much of the fun factor.