What the hell are those and why do they happen? Testing a load for a 1913 M96(all matching serial#’s) Trying to replicate the original 140gr load. Powder:43.7gr of RL-22 Bullet: 142gr SMK Primer: S&B LR Case: Win 3rd firing That target is at 50yds. Don’t know what that little smear is. Powder?I know RL-22 is a really slow burning. However it is also the most recommended for factory duplication. From what I have read the factory 140gr spitzer has a MV of 2635fps. Which is am a shade over. I noticed that RL powders are like carbon fouling machines 10x leaves my 22-250 looking like a chimney on a coal stove. See the picks below. The SD is phenomal. I shot one round at another target (insert curse words) above the one the picture.