Hello guys trying to develop a load for 338 Lapua. I have load info from Berger, Hogdon and Quickload. Somehow Berger is getting 2680 fps with 89 ish(don't remember exact number) of Retumbo in 26" barrel if I remember correctly. Hogdon is getting 2654 from 94 grains in 24" barrel. And Quickload when tailored to my case capacity of 117 grains and OAL of 3.9+ is telling me I can only get little over 2700 fps in my 30" barrel. Velocity part doesn't bother me much but the part that bugs me is according to Quickload Retumbo is 100% burnt in under 20" barrel length. So that means Retumbo is too fast for my roomy chamber?? Apparently RL33 and VV 570 are better fit in my case but I'm concerned about temperature sensitivity of those two. I understand Quickload is not exactly accurate but it can't be that far off? Or can it be? Experts, if you were in my boots, which powder would you pick?? Thanks in advance.