Finally finished my new LR rig - texan in .257 with maddog RJ9A stock. The gun is pretty heavy, so with the muzzle brake there's hardly any recoil - very easy to spot your hits & misses. Shooting exclusively NSA ammo - probably the 65 and 70grain as they seem to be the most accurate ones. More testing coming and some footage to youtube in the near future! 
One of the test groups with NSA 70gr slugs.
One of the test groups with NSA 70gr slugs.