Spent about four hours today, little over 200 rounds, on the first half of the shooting, the lead stuff.
Monday will do the jacketed loads.
So far, lead is averaging a shade above & below 3 inches for best 5-shot groups at 25 yards off a rest.
The gun's making me work to meet the caliber's potential, at the moment I'm thinking it may be what I'm measuring as oversized chamber throats.
If the trend continues with jacketed, I'll have my gunsmith double-check the chambers.
He has more precise chamber-measuring thingies than I do.
Today the handloaded lead bullets were .429 and .430, 200 & 240 grains.
Commercial loads were 200, 246, and 255, varying velocities.
Best commercial was a Fed 200 SWCHP that went a hair under 2 inches, best handload was a 200 LFN with Unique at just a hair over 2 inches.
Worst handload was a 240 Hornady swaged that did 5 inches even with three different Unique charge weights.
The rubbers may be oogly, as some have mentioned, but they are quite comfortable while shooting.
Denis