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Not the same size primer

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Old 03-23-2012, 03:03 PM
Bronze Member
Join Date: Mar 2012
Location: Northern California
Posts: 66
Re: Not the same size primer

Yeah soon as I get enough that's what I'll try.
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Old 03-24-2012, 10:48 AM
Bronze Member
Join Date: Aug 2011
Location: central Ohio
Posts: 99
Re: Not the same size primer

How does changing from a large primer to small affect powder charge and pressure?
I'm operating from brass I've had for a long time, which use lg primers, but inevitably I will end up with some of these.
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Old 03-24-2012, 11:41 AM
Platinum Member
Join Date: Dec 2001
Location: Winterville, NC
Posts: 1,490
Re: Not the same size primer

In reality, it probably will not make that much of a difference, but we should all apply one of the general basic rules for reloading safety, which states: "Follow loading recommendations exactly. Don't substitute components for those listed. Start loading with the minimum powder charge in the load shown".

I thought the photo was a farse till I started looking at my brass! Dang, how did they slip that past us? I would have been pissed if I had broken my priming tool trying to get a LP primer in a SP primer hole!

I mistakenly loaded some 40 S&W with small rifle primers once. I should have dis-assembled the loads but shot them anyway. Obviously, nothing ever happened but now I make extra efforts to check all the components throughout the process.

Gonna try some and see if there is in fact a difference. JohnnyK.
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Old 03-24-2012, 03:00 PM
Bronze Member
Join Date: Mar 2012
Location: Northern California
Posts: 66
Re: Not the same size primer

I admit the picture is a bit strange looking because the other primer is so much smaller. Please do try them and post your results. Primer size powder type and charge weight. So we have a place to start. That would be great! It's just a pain separating that stuff.
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Old 03-26-2012, 07:23 PM
Junior Member
Join Date: Jan 2012
Posts: 11
Re: Not the same size primer

This is super funny, I just went shooting with my son yesterday, he had a new Glock and my 1911, came home dumped a couple hundred shells in the tumbler, I went to reload tonight and for whatever reason I looked at the headstamp and noticed the small primer, I've been reloading 45 ACP's for 30 plus years, I've shot IPSC& IDPA and reloaded thousands of these, I told him look before buying anymore, we spent an hour picking that crap out, Don't know for sure if they would mess up a Dillons mechanism or not, What was the reason for this change and are they all going "small primer"
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Old 03-27-2012, 08:31 AM
Platinum Member
Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,596
Re: Not the same size primer

I don't see a problem; use the correct primer and shoot it.
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