I had a hard time getting a few custom rifles to shoot the lrab and called the ballistician at nosler. We had a long chat about them and to sum it up,
They use a different copper on the lrab as opposed to their other bullets. The lrab will sometimes dwell a bit longer than other bullets while pressure builds which is likely where the seating depth criticality would come in. A firm kiss or large jump would likely smooth the dwell time into something consistent. The suggestion I was given was to try faster powders on sharp throated guns that struggled.
I personally gave up on trying to build around them because of the randomness and inflated BC.....BUT the bullet does perform well enough with good velocities.
They use a different copper on the lrab as opposed to their other bullets. The lrab will sometimes dwell a bit longer than other bullets while pressure builds which is likely where the seating depth criticality would come in. A firm kiss or large jump would likely smooth the dwell time into something consistent. The suggestion I was given was to try faster powders on sharp throated guns that struggled.
I personally gave up on trying to build around them because of the randomness and inflated BC.....BUT the bullet does perform well enough with good velocities.
