Alinwa
Al
My 6BR load is 31.5 gr Varget and a 105 gr bullet.If you try fireforming with this load about every 20 shots you will have a round that completely takes the primer right out of the brass.
With 28 grains you get 100% perfect ammo without a hint of trouble and the next loading at 31.5 you won't lose a single case.
Lynn