Thread: CBTO new projectile

I despise load development.

I plan to try ELD-Ms on two rifles and use the same CBTO measurement from the previous SMK loads, measured using the Sinclair tool.

Would you measure the new projectile touching the lands. I can’t see that it’s necessary other than to measure possible throat erosion rather than as a safety precaution. I can’t see that the shape of the projectile changes the distance from the case base to where the ojive engages the rifling.

Any contrary thoughts?