Suppressed 300 Win Mag custom build barrel type and length

[Elk Hunter 338]

My barrels have 600 rounds on them and I've recently taken off two with over 1200 documented rounds on them all burning H1000 and 230's 26" and they still shot very well .. lost some speed but not much. im very very aware to not get them hot or run over shot strings to keep barrels cooler and they last quite a while... run H1k and keep them clean it will last a long time! When all things are considered I didn't notice a huge jump in recoil between the 30 NOS and the 300 rum