lancetkenyon Report post Posted January 30, 2016 .257 115 Berger do NOT need a 1 in 8" twist. Recommended twist rate is 1 in 9" according to the website, but 1 in 10" according to the book, and running it through their twist rate calculator, 1 in 9.75" is acceptable. My barrel is 1 in 10" and is crazy accurate. Also, QL Is a program that approximates max loads at SAAMI pressures and COAL. Only your gun can tell you what max pressure is. Could be lower that QL or book max, could be well above. Depends on a lot of factors that a program or book cannot take into account. That is why you need to start low and work up yourself, with knowledge of what to look for to indicate over pressure signs. Share this post Link to post Share on other sites
firstcoueswas80 Report post Posted January 30, 2016 My rifle is a 1:10 and pushes the 110 and 115 bullets just fine. 1 Share this post Link to post Share on other sites
257 STW Report post Posted February 1, 2016 I also shoot 115vld using H1000 out of my Remington 700 257 weatherby 26" 3380fps half inch groups at 200 yards Share this post Link to post Share on other sites
