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Small primers in a .45 case?


Skizeks
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More and more of the SP .45 cases are showing up, I have probably 5-600 I picked up at the range.

It has to do with some states lead free ammo rules.

They load and shoot just fine, you just have an extra step when sorting cases.

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The NT on the head case stands for Non Toxic. All the clean fire/lead free ammo from all the manufactures are coming with small primers. Winchester first tried it with large primers, but something about the lead free non toxic compound would not ignite properly.

These can be reloaded the same as large primer cases. I have reloaded thousands as I have a good supply of SP .45 cases.

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Is this more for certain states or ?..I have only seen one case that used a small primer..a lot of loaders in this area say to just pitch them if found ?

Edited by usmc90
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Out of 2200 once fired cases from coloradobrass (obtained in the last 2 months), I had over 100 so far that I have caught when sorting. I found about 10 so far while loading :angry2:. The headstamps are from Blazer and Federal. I checked some of the Blazer brass 45ACP I have in the safe and they are indeed small pistol primers. These were not lead free. I think the Federal American Eagle stuff may also be SPP

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Pretty muck all of the ATK companies went to small primer .45 brass.

Ammunition

The Ammunition division supplies small-caliber ammunition to sport-shooting enthusiasts, devoted hunters, federal and local law enforcement agencies, and the military. Our ammunition brands include Federal Premium, Alliant Powder, RCBS, CCI, Fusion, Speer Ammo, Speer Bullets, Estate Cartridge and Blazer.

Edited by Dirty Rod
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Now, I have not tested this but maybe one of you has. It seems to me if you were loading for power factor, you would not keep your load the same from large to small primer 45. I would think that the small primer would cause lower power factor.

Then again, that's why you don't load to 166 pf

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Now, I have not tested this but maybe one of you has. It seems to me if you were loading for power factor, you would not keep your load the same from large to small primer 45. I would think that the small primer would cause lower power factor.

Then again, that's why you don't load to 166 pf

I have tested this and found no real difference between large and small primers using same bullet and powder charge.

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Most of the folks I talked to see no difference however, on another forum, a guy tested a bunch of powders through a chrono and saw large differences in SD and measured a drop off in velocity around max charge for 3-4 powders as GTOguy06 suggests. I don't load over midrange so my results are consistent from small to large.

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