I'm trying to work a new load up for the .243 using Sierra 60gn hollow points. I've loaded a dummy round and kept seating the bullet until the bolt just closes. This gives an oal of 2.675 thou. A previous load with a 100gn btsp bullet gave good accuracy 15 thou off the lands so i've now seated the bullet in further to achieve this and have been left with a finished OAL of 2.660 thou. But the trimmed cases are 2.040 long and the bullets are 0.740 long so if i've done my sums correctly (2.040 + 0.740 = 2.780 - OAL of 2.660 = 120) the bullet is only seated a maximum of 120 thou. Modern reloading gives a minimum OAL of 2.600 so my question is, is 120 thou enought seating or should I seat the bullet deeper And if I do seat the bullet deper how is accuracy likely to be effected
Thanks.
Thanks.