Here are the specs for my 338 Allen mag. I have gotten my brass from Kirby and they are all head stamped. Unless you load them hot 100 rounds should last the barrel life which in my case is a very long time. Once a load is found and dialed in I do not shoot paper with it. I only use it for long range shots
BAT Model M single
BAT SS 40 moa rail
Jewell trigger
Lilja Allen32, 1-10 twist Barrel
APS 5 port Painkiller muzzle brake
McMillan A-5 w/ decelerator padIntegral
adjustable cheek piece
APS pillar bedding(3 pillars
Metal ADL trigger guard
Stainless steel barreled receiver and trigger guard
NF ultralight rings(2 sets
NF NXS 5.5-22x56mm
BAT Model M single
BAT SS 40 moa rail
Jewell trigger
Lilja Allen32, 1-10 twist Barrel
APS 5 port Painkiller muzzle brake
McMillan A-5 w/ decelerator padIntegral
adjustable cheek piece
APS pillar bedding(3 pillars
Metal ADL trigger guard
Stainless steel barreled receiver and trigger guard
NF ultralight rings(2 sets
NF NXS 5.5-22x56mm
