I was shooting my 338 Lapua today and locked the bolt up twice, both times I was unable to extract the round. This rifle has always had a tight bolt after firing but I figured it was the action it is a BAT and seems to have really tight tolerances. But today shooting my normal load of 92 gr Retumbo it got really tight, I have tried several things but I dont know what is causing it, therefore kinda hard to fix it. I tried bumping the shoulders back further, I went as far as shellholder would let me, and that didnt seem to help. Rounds easily chamber but after firing still tight. I lower the charge weight down from 92 to 86 gr Retumbo, It was better @ 86 gr but still a little tight. 86 gr is a starting load so that has me concerned. Cleaned the Chamber out as well. Anyone have any Ideas?