for those who are interested, we ran some tests with N350 and 3N37 in the czechmate
against all odds, we got some really good results with the N350.
Geco cases, CCI primers, and Berry's copper plated round nose 124 grs, OAL 29.5 mm. charge slightly compressed, clocked around 1350 fps with a 30 fps difference between shots. will PM the powder dose to those interested.
the 3N37 gave also some good results but powder dose necessary to reach major factor was higher, and speed deviations larger.
primers slightly cratered and flattened but not worse than my minor reloads with N320