I am having a bullet setback issue with my savage 111LRH in 338LM. I am using RCBS FL dies with lapua brass and berger 300gr bullet using 89.0gr retumbo. COL is 3.750 (just fits the magazine). The problem is with both fired and unfired lapua brass. I have tried using lots of roll crimp using the RCBS dies and no crimp at all. Tried pushing them on a table and the bullet wont budge but the rounds in the magazine are experiencing a lot of bullet setback. I cannot move the bullets deeper into the cases before firing but they can be moved in and out after being in the magazine for a couple of rounds. I know this sounds confusing but I am just trying to explain the best I can. Is there another die that works better or am I missing something. Not new to reloading but this is the first time I have had this problem. Thanks for any help.