i am looking for the best long range hunting caliber shots will be out to around 1200 on deer and elk. i already have a bat machine action i was originally going to build a 338 lapua. but have since been thinking that maybe some others would be better. i was thinking a 338 lapua improved, 338 allen express or maybe a 7mm allen mag. i was wondering if you guys can give me your thoughts. and the plan on the gun is to have around a 32 inch barrel and thats before the brake.