Large primer vs Small primer

[Blackfoot]

Has anyone determined any difference in velocity between loads using large and small primers in .45acp?

 

Blackfoot

[Garrison Joe]

I've seen data showing about 25 FPS higher with a large primer.  Not my data, because I won't use the small primer cases.

 

Good luck, GJ

[VICIOUS]

Hi Gang; I like small primer 45 acp. Brass is cheaper, you do not care if you lose them, people will go out of there way to give them to you.

[Boggus Deal]

Mic McPhearson, a good friend of mine, who has forgot more about ballistics than most people will ever know, told me that small primer .45 ACP can be more consistent than large primers. In our game, I do not think it would make a difference.

[DUSTY BODDAMS]

;D bogus, I do know that the small primer is consistent, in stopping my 650 :o. Dusty

[Tommy Reb]

Hello Blackfoot.  I've tested that using Green Dot powder and 200 gr RNFP bullets.  Everything the same except the primers.  My data says Garrison Joe is just about right - plus 25 fps for the large primer.  I know some report better consistency with the small primers.  However, my data did not show a significant difference in extreme spread or standard deviation between the two.

 

TR

[Rooster Ron Wayne 86029]

I could not say for sure. 

I throw them little Bass-Tirds in the brass recycle bin. 

[Griff]

On 9/27/2014 at 7:29 PM, VICIOUS said:

Hi Gang; I like small primer 45 acp. Brass is cheaper, you do not care if you lose them, people will go out of there way to give them to you.

IMO, it's just being inconsiderate of everyone that has been using the large primer 45Auto brass for decades.  So yep, user name fits.   Folks using the small primer brass are simply making it harder for those set up for large primer 45Auto to reload.  Brass is not cheaper.  I haven't found anywhere that sells new, unprimed small primer brass, and those that sell used brass charge the same, whether small or large primer.   I will not return your brass to you, when it winds up in my brass bag, I put it in my scrap brass bin and sell it.   In my view, small primer 45 Auto brass is probably the brain child of some "anti-gun" engineer who thought it a great way to infuriate gun folks.  Very much how I feel about Hodgdon and its Pyrodex rusting agent that burns.  

[Eyesa]

31 minutes ago, Griff said:

IMO, it's just being inconsiderate of everyone that has been using the large primer 45Auto brass for decades.  So yep, user name fits.   Folks using the small primer brass are simply making it harder for those set up for large primer 45Auto to reload.  Brass is not cheaper.  I haven't found anywhere that sells new, unprimed small primer brass, and those that sell used brass charge the same, whether small or large primer.   I will not return your brass to you, when it winds up in my brass bag, I put it in my scrap brass bin and sell it.   In my view, small primer 45 Auto brass is probably the brain child of some "anti-gun" engineer who thought it a great way to infuriate gun folks.  Very much how I feel about Hodgdon and its Pyrodex rusting agent that burns.  

Or Hornady brass that's shorter than everybody else's!

[Garrison Joe]

I've found that  the small primer .45 AUTO brass is the brainchild of several of the companies who wanted to make non-toxic .45 practice ammo for police departments (who often shoot on poorly ventilated indoor ranges, and buy the vast majority of non-toxic pistol ammo).   But, they were having a HARD time making non-toxic large primers - they just had lousy reliability.    So, someone got a real stupid idea to go against the 100 year old SAAMI, mutually-agreed upon, shooting industry guidelines that .45 AUTO needs to be large pistol primed, and started making small primer pockets to hold the non-toxic small pistol primers that were easier to make reliable than the large primer size.

So, it was a combination of errors.  PD's which would not upgrade their ranges with suitable ventilation to meet OSHA standards, government entities that refused funding to upgrade local departments and larger ranges to meet current air quality standards, and companies making primers who still have not figured out how to make non-toxic large pistol primers reliably.  But if someone has more recent intelligence on this situation, I'd like to hear it.  GJ

Edited August 20 by Garrison Joe