This is the first rifle that I did all the machining and chambering. Rem. 700 SA trued and lugs squared Stainless Bolt Wolff spring, Callahan Speedlock Alum. Firing pin Krieger 31 in. Heavy Varmint 1 in 8 TW. .2955 neck. .200 Freebore 4 port muzzle brake made by myself. Shilen 2oz Competition Trigger Bobby Hart LRT Stock Devcon bedded EGW 20 MOA Base Millet 6x-25x-56 LRS Tactical Scope Millet Tactical Rings Tarey As of today I have only shot it 20 times for barrel brake in. With 140gr. A Max's and 64grs of H 1000 I am up to 3140 fps average for 3 shots that went into 3/4 inch at 200 yds. That was my last 3 shots. I am going back out on friday to test some more.