Quote:
Originally Posted by ozo
You will have slower fps, maybe less than 50fps,
depending on your recipe. Yet still slower.
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You have chrony data to back up that it is the primer size?
I've never found any noticeable velocity difference in my loads that could be directly attributed to the size of the primer. 25-30fps is what I normally see and it's a normal acceptable deviation for my own .45ACP reloads.
Maybe the difference is caused by internal case volume, maybe by the smaller primer, I can't say 100% which is the culprit.
Besides the PitA during priming, that's why I keep em separated...but I sort my pistol brass by brand as well unless I'm just loading plinking ammo.
Quote:
Originally Posted by ozo
.45acp with large primers are much better performers
and all data commonly used to re-load them are for
components using them.
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You are correct that all the published data out there is for "standard" LP brass. Doesn't mean that you can't work up a load using that data with SP brass though.
I strongly suspect that we'll see more and more SP .45ACP brass in the future. Several manufacturers have regular (not non-toxic) loads that use SP brass too.
I'm thinking that the manufacturers are going to wind up simplifying their production process by gravitationg to just one primer size. They'd only need to stock one primer...like USMCSpeedy's thinking.
I wasn't too keen on the idea at first, but I can accept it and I won't be surprised if we start seeing .44Mag or other cartridges switching to small primers too.