Graye2

I recently got a 750 up and running (first progressive) and installed one of these powder checks. Everything works fine except the majority of the time the plunger is activating the switch but not retracting on the down stroke. It just hangs up keeping the switch activated. Anyone else have this issue? And if so how did you fix it?

Thank you for the replies and for the article...that was a good read. Knowing me and how anal I am on rifle rounds I think it’s best for me to just pick a velocity I like for now and shoot until primers are back in stock. I’ll end up blowing 100’s with tests. I think I’ll hold off on a Ransom Rest for now as well as last night I couldn’t help myself but to want to start developing test after test. I would have never imagined hand gun loading would be harder than rifle. In my rifles I can use the Satterlee 10round test, find a a velocity node, and tune with seating depth in ~100 rounds. When I do get more primers for testing any methods / shortcuts like the Satterlee method work well for you? Thanks again.

To date I’ve only loaded rifle rounds ...everything from 5.56 to .338 LM and I’m used to ES below 10. Yesterday was my first entry into 9mm and knew they wouldn’t be as accurate but surprised at the results with different OAL. I was using range pick-up brass with matching FC headstamps out of a Beretta M9 with Wilson Combat mods. I ran 6 x 10 round groups over a LabRadar. Competition Redding dies were used on a T7 and all charges were weighed on an AutoTrickler so believe charges and brass were consistent...125gr Hornady HAP over Powder Pistol and CCI #500 primers. (Note: I had 3 that failed to ignite but I’m assuming it was seating depth...hindsight I should have shot them a 2nd time to confirm) Here were my results: 5.2gr 1.120 OAL 1038 ft/s 32 ES 9.6 SD 5.4gr 1.120 OAL 1086 ft/s 34 ES 11.6 SD 5.6gr 1.120 OAL 1096 ft/s 32 ES 9.5 SD 5.0gr 1.069 OAL 1020 ft/s 55 ES 16.3 SD 5.2gr 1.069 OAL 1049 ft/s 54 ES 17.9 SD 5.4gr 1.069 OAL 1070 ft/s 81 ES 26.8 SD Accuracy at 25yards on a rest produced around 3” groups...honestly I didn’t like shooting on a rest and much of the accuracy was likely me but the 5.4gr at 1.120 seemed to be the best. My question is really around the SD’s at 1.120 vs 1.069. I had read somewhere that the Wilson Combat 125gr load is 5.2gr at 1.069 and they guarantee 1/2 MOA at 25yards. Any thoughts on why my ES and SD’s were consistently higher at 1.069 OAL? These are for practice now but will eventually be my 3gun load. In my rifle rounds I’ve never seen seating depth play that large of a role but understand the impact is more significant in the smaller case.