charge weights between .400 and .401 [Archive] - Glock Talk

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bballer182
10-11-2010, 17:33
I've just got into reloading for the .40 in my G22. So far i've loaded up some 165gr rainier FP over 8.5gr of AA7 and that seems to be a good load not too fast and it feels pretty good and it expands the cases a lot less than most factory loads i have shot.

Question is, if i load rainier 180gr FP, which are .400, what should i do to the charge weight if i load berry's 180gr which are .401 if anyting at all?

Boxerglocker
10-11-2010, 17:40
Plated bullets are loaded just like lead and tend to run a little faster, thus the charge range starts higher at minumum and max is lower than FMJ. If you have a proven plated/lead load you can generally start at that point for FMJ given the same profile bullet and weight. The bullet diameter really has nothing to do with it. Use the standard charge range for 180 and you'll be fine working it up.

fredj338
10-11-2010, 17:42
As boxer notes, it's not the 0.001" larger bullet but the bullets composition. You load plated someplace between lead & jacketed, most use lead data for a cushion. If you have no eald data, using starting jacketed loads often work well w/ lead or plated bullets.

bballer182
10-11-2010, 19:37
So i should be able to load the berry's the same as the rainiers then.

fredj338
10-11-2010, 22:35
So i should be able to load the berry's the same as the rainiers then.

If bullet profiles & wts are the same, they will be very close. If you are not running near the top end, data should be interchangeable. If at the top end, drop back 5% & work them back up, especially w/ uberfast powders.

bballer182
10-12-2010, 07:07
If bullet profiles & wts are the same, they will be very close. If you are not running near the top end, data should be interchangeable. If at the top end, drop back 5% & work them back up, especially w/ uberfast powders.

Cool. thanks for the help Fred. At this point i would consider my self too new to try uberfast powders in a round that is known for KB's. I'll stick with the slower stuff for a while.