Peter M. Eick
Member
I loaded up 1400 rounds of 10mm today using 800X. I was working with a mild load for 10mm 8.3 grns and a 180 grn Lasercast slug. CCI300 primers to 1.253 which is my standard for 10mm. My press is a Pro2000 and I was running a baffle. My press is well worn with over 300,000 rounds loaded on it.
First observation. It takes about 10 rounds for the Uniflow (with the small micrometer) to settle in. I was seeing 8.7 grns down to 8.1 grns during the settle in period. All of those charges were dumped and rethrown.
2) The charge weight went heavy as I loaded the press up with all 5 stations in use. 8.3 grns went up to 8.5 grns with the stronger shaking of the press.
3) If I stopped and weighed every round once I reset the weight to 8.3 grns, the charges varied between 8.5 and 8.2 grns.
4) If I just randomly stopped and weighed a charge, it was 8 times out of 10 8.3 and 2 times out of 10 8.4 grns (yes I did keep track).
5) If I refilled the uniflow (for best results, don't let 800x get below 1/2 way full or the charges go light), the next charge was always 8.5 grns.
Conclusions: 800X is an easy powder to throw +/- 0.1 grns with a baffle if you keep the rhythm up on the pro2000. You just have to plan on tossing back the next drop after you refill the powder measure as it will always be heavy.
I am glad I still have 10 more lbs of 800x. It works great in 10mm, does nice mild to wild lead loads and is easy for me to meter.
First observation. It takes about 10 rounds for the Uniflow (with the small micrometer) to settle in. I was seeing 8.7 grns down to 8.1 grns during the settle in period. All of those charges were dumped and rethrown.
2) The charge weight went heavy as I loaded the press up with all 5 stations in use. 8.3 grns went up to 8.5 grns with the stronger shaking of the press.
3) If I stopped and weighed every round once I reset the weight to 8.3 grns, the charges varied between 8.5 and 8.2 grns.
4) If I just randomly stopped and weighed a charge, it was 8 times out of 10 8.3 and 2 times out of 10 8.4 grns (yes I did keep track).
5) If I refilled the uniflow (for best results, don't let 800x get below 1/2 way full or the charges go light), the next charge was always 8.5 grns.
Conclusions: 800X is an easy powder to throw +/- 0.1 grns with a baffle if you keep the rhythm up on the pro2000. You just have to plan on tossing back the next drop after you refill the powder measure as it will always be heavy.
I am glad I still have 10 more lbs of 800x. It works great in 10mm, does nice mild to wild lead loads and is easy for me to meter.