I know I am probably overthinking this however…I recently got a CZ 600 trail as a varmint/Kubota 1100 rifle, great rifle shoots 1ish MOA all day. I was trying to get some measurements for GRT to make a couple of different loads and found it has a really really short free bore. It’s free bore is .008, is this normal? Or… was my methodology wrong.
Using a hornady comparator I took a factory FMJBT 55gr Aguila measure both CBTO and COAL. Then pulled bullet, using hornady modified case and OAL gauge used said bullet to get a distance to the lands. Recorded both CBTO and COAL again did the math got .008 difference in CBTO and .0035 in COAL.
I know, I know the point is to measure and sub 20-30 off the lands. Which I intend to do. If however the typical 55gr plinking round is only .010 (rounded up) off the lands why not load to the same?
Trying to load 30gr Barnes VGs for raccoons n squirrels. Yet that small bullet loaded to Barnes COAL data (yes I tried several bullets) is at jam.<——my dilemma!!! Different give shapes and that I get.
Using a hornady comparator I took a factory FMJBT 55gr Aguila measure both CBTO and COAL. Then pulled bullet, using hornady modified case and OAL gauge used said bullet to get a distance to the lands. Recorded both CBTO and COAL again did the math got .008 difference in CBTO and .0035 in COAL.
I know, I know the point is to measure and sub 20-30 off the lands. Which I intend to do. If however the typical 55gr plinking round is only .010 (rounded up) off the lands why not load to the same?
Trying to load 30gr Barnes VGs for raccoons n squirrels. Yet that small bullet loaded to Barnes COAL data (yes I tried several bullets) is at jam.<——my dilemma!!! Different give shapes and that I get.
