Al it’s the rifle I shot in the last F-Class match when it heats up I am having heavy bolt lift with the last 4 or 5 rounds.Shooting Varget with 178 Hornady BTHP Match bullets I am thinking I may need to try maybe a powder with a faster burn rate at this time just trying to find some imfo so I don’t waste a lot of time and powder and bullets.
Barrel length should not have much bearing on powder charge. The will be determined by the Action/Tenon diameter. That will greatly affect the amount of pressure the case will take. If you are having a hard bolt lift, then it is too hot!