QuietTexan
Well-Known Member
Yes. You've hit on the crux of the biggest problem in reloading - tolerance stacking. You can't precisely measure the exact interface point, so we use an arbitrary point along the ogive as a proxy. Any change between the two is an uncontrollable variable because we can't measure it. Meaning all your seating depths could vary by however much variance there is between the ogives of individual bullets.
The only way I know to mitigate the problem you described is buy expensive bullets from well known quality manufacturers and let it ride. Maybe Area 419 or XXI will start building high quality inserts with calibrated openings, but even then there's a tolerance between the tool, the barrel diameter, and the beginning of the lands, and all that moves as the barrel wears.
This is why PRS shooters will try to find jump-tolerant seating depths, they want a deeper, wider node that might not provide the absolute best groups, but will work longer. As opposed to benchresters, who will chase the lands as the throat erodes for the absolute best accuracy. Pick which ever you want; neither is wrong, just make sure whichever you go with aligns with your goals.
The only way I know to mitigate the problem you described is buy expensive bullets from well known quality manufacturers and let it ride. Maybe Area 419 or XXI will start building high quality inserts with calibrated openings, but even then there's a tolerance between the tool, the barrel diameter, and the beginning of the lands, and all that moves as the barrel wears.
This is why PRS shooters will try to find jump-tolerant seating depths, they want a deeper, wider node that might not provide the absolute best groups, but will work longer. As opposed to benchresters, who will chase the lands as the throat erodes for the absolute best accuracy. Pick which ever you want; neither is wrong, just make sure whichever you go with aligns with your goals.
Last edited:
