I was running a 155 scenar with varget 46.5 grains to be exact. This load was safe in my rifle. I tried it suppressed and noticed shiny spots/ swipes on the case head? The other factor was a new can of Varget. Thanks
Lots of guessing in this thread.
Without doubt a suppressor can add to time under the curve and show swipes and brass flow with loads that don't unsuppressed.
Area under the pressure curve in a gas system of a semiautomatic sure, adding a suppressor can cause timing issues.
But a can will not cause brass issues in a bolt action in an otherwise normal pressure load. Peak chamber pressure is within the first few inches of bullet movement, by the time you get to the end of the barrel, residual chamber pressure is way down and drops off when the bullet exits the muzzle, just not as much as If there weren't a can. Having a few extra inches of barrel would cause much more area under the tail of the pressure curve there. The suppressor is not the issue, the new can of Varget is.
