Got a load developed for my 2506 and the 135 bergers. Im running them at 3075fps with great accuracy. I have yet to find the top end of h4831sc but im guessing pressure will come on around 3175-3200fps. I shot the 117gr Cayuga at 3400fps with amazing accuracy with rl26. Im guessing around 3200-3275fps for the 135gr bergers.