Developing a load for my Savage 12 in .223. Varget working the best somewhere around 24.5 - 25 grs. Lapua Brass trimmed to 1.752.
Using a RCBS Competition die 37201. My COAL is varying about +/- .008. Shooting for 2.260. Checking from end of case to tip of bullet.

Ordered a Hornady bullet comparator to start checking at the ogive.

BUT......What would cause the COAL to vary so much? Does this affect accuracy?