01-09-2025, 03:34 PM
Every bullet has its own internal ballistics and the Sierra 100 SBT has a lot of bearing surface. More bearing surface = more friction. More friction = a slower start down the barrel. Which changes all of the pressure dynamics as the powder burns vs what may be published for a bullet with less bearing surface. Essentially, you end up with an earlier pressure peak and aren't able to attain the velocities achieved with bullets with less bearing surface. If you're married to the bullet, try a slower powder.
#FJB