I have a couple of hundred once fired .45 brass with the small primers. Most .45 brass I've seen use the large primers. Any reason not to reload the small primer brass ?

It is nice to have options. If you only have SPP then they are gold.
I haven’t reloaded any as I am flush with LPPs but I am keeping what I have just in case.

DITTO that. Just keep your SPP and LPP brass separated on your reloading bench and you're GTG!

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I find it much easier to work with .45 brass that has the large primer pocket. That size is far more common and .45 brass is not scarce.

I've loaded both to test side by side, with the same load but for the primer and brass. No issues and no winner between them. I'm happy to have both, but I've always separated all my brass by make, etc.

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How God has blessed us!

I've loaded some of it.
No issues encountered.
I separate them from the standard brass and hold them in reserve.

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it just needs more voltage

I toss all 45acp spp brass in the scrap bucket. Not worth fooling with as I have ample supplies of the original brass.

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S&W Accumulator

I agree with this. I get rid of all the 45acp spp brass in file 13.

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James
On the Llano Estacado

I ran into some spp 45acp brass a few years back that had crimped primer pockets.

I just sort SPP 45ACP brass and LPP 45ACP brass into separate containers.
I have no problem reloading either flavor - and having the option to load either variety (depending on what primers I have or can get) seems like an advantage, rather than a disadvantage to me.
But as with all things related to handloading, YMMV...
Those of you who scrap your SPP 45ACP brass, feel free to send it to me. I'll even gladly pay the shipping charges.

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Itf you want to get rid of them, I’ll take them.I’ll even pay postage.

That said, I have used both large and small primer brass without issue, and can tell no difference in the finished loads.

Since SPP 45 ACP started showing up some people have shot and left it on the ground for me to pick up.

Once fired SPP is better than LPP that has been fired a dozen times.

My thoughts exactly. I'll reload either variety, and if people want to leave their SPP 45 brass lying around for me to pick up, then that's MORE than A-OK by me! I'll take it!

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Bullseye shooters have been finding that, with certain loads, the small primer brass can yield slightly tighter 50 yard groups as tested from a Ransom Rest.

Another good reason to keep the stuff.
The only thing is that lpp vastly outnumbers spp brass.
Statistical probability leads to lpp being more convenient to deal with, especially in progressive loading where a primer size change can be a bit involved.
Still, spp has equal functional value though batch size is smaller.

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it just needs more voltage

I keep all my SPP .45 ACP separate from the LPP .45 ACP. I store it for a rainy day and the same with SPP 10 MM brass. Nice to have options if needed.

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USMC 69-93 Combat Pistol Inst.

I prefer SPP in .45. Uses the same primers as my other pistol calibers. I got into loading .45 after they came around so I have no loyalty to LPP. Before primers became so scarce I bought a brick of LPP and used them in brass I picked off the floor.

Makes absolutely no difference so long as you don’t mind the inconvenience of segregating cases by primer size.

And I actually prefer the small primer....don't have to change my primer assembly on my Dillon 550 nearly as often.

Randy

Just a note here, after I load a batch of SPP ammo, I draw a line with a Sharpie across the base of the case, across the primer, so I can tell at a glance which is which.

I’ve got some SPP brass in .45 ACP and some in 10mm that I keep on hand just in case. I haven’t loaded any yet, but it’s there if I need it. I keep it separate and well marked.

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USS Brewton FF1086
SWCA#3597

Remember that 450 SMC brass is 45ACP-sized and small-rifle-primer.

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Interesting. Has anyone figured out or even theorized why that would be the case - or how it works that way?

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Yes I too have an ample supply of .45 brass with the large primers. What I don't have is an ample supply of LPP to go along with them as they seem somewhat difficult to find at present ...at least for me.
I checked and I do have several hundred .45 brass with the small primers and several thousand of the SPP as I also reload for .38 Special.
As stated above by others it's nice to have options .
Thanks for all the replies !

You can theorize forever but it probably means little in the way of usefulness. The only way to find out for sure is to do some group shooting at the maximum distance you plan to shoot and compare group sizes.

The one experience I've had in comparing primer sizes has been with the 7.62x39 cartridge in a bolt-action rifle. Small rifle primer cases vs. large rifle primer cases made no difference in velocity or accuracy at 100 yards.

This may or may not hold true for the .45 ACP cartridge; I don't know. Just guessing, I'd say results would be very close to identical, but I've been wrong many times.

I purposely avoid the small primer stuff when buying .45ACP- seems like CCI/Federal went to it a few years ago.

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Some Might Say.

I’ve seen no performance difference in my reloading efforts.
I find it annoying if I fail to sort them adequately.
I generally reserve the small pistol primer loads for target or training sessions where brass recovery is difficult. Muddy or grassy areas for example. I don’t mind abandoning it.

Six of one, half dozen of the other. I inspect every case before I reload it so keeping large pistol primed and small pistol primed brass separate is no big deal. There is really nothing to fear from small primed 45 ACP, Browning's ghost ain't gonna haunt you if you use small primers. I don't compete so if there is a difference in performance, it is negligible and not worth bothering and my 3 45 ACP guns can't tell the difference.. I have seen a lot of the "I been usin' large primed 45 ACP brass since 1920 and I ain't gonna change, no matter what!" thinking, which is OK as it's their handloads, their time and their money. Throwing away a 45 ACP cases is like throwing away nickels...

Use whatever brass you choose. I don't think there is any fear involved, it's just a matter of convenience.

I probably have two or three hundred SPP 45 cases that I have collected over the years.

I really never use them because normally I don't have to, but they did come in handy in late 2020/early 2021 when I was running out of LPP's.

While it's OK to have the option of SPP or LPP, I strongly believe that adhering to a single specified primer size should be a condition of SAAMI approval.

That is an idea that should be explored. I do not think using SPP in place of LPP would cause an increase in pressure though. Could be wrong, was wrong at least once in my life.......

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USMC 69-93 Combat Pistol Inst.

- Just wait 'til they market the MPP version..... - 'Medium Pistol Primer'.

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Ret'd LEO
SWCA #2275

I collect all my 45 ACP brass when I go to the range. Sometimes a 45 ACP case with a small primer gets mixed in. I place them in the trash.

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S&WHF #946
S&WCA #3824

My club is doing a primer order, and the only primer that isn't available for ordering is LPP. Because of that, I am laying in a supply of once fired SPP 45 ACP brass, because I enjoy shooting a 45 and I don't want to get caught without ammo!

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I just picked up another small batch of about 50 .45 ACP pieces of brass with the small primers that someone left on the ground. I'll add these to my stash . It would seem I'm not the only person having difficulty finding LPP so at least I'll be able to keep on reloading .

I had a friend who loaded on a Dillon 550 so I used to trade him the SPP brass for LPP brass. He liked them because he didn't have to change the plate. I wouldn't have minded loading them but the trade was better for him.

Unfortunately he moved to a different state for work so I lost a shooting and loading buddy.

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SWCA #3437

Remember the furor that struck when .45 acp small primer first hit the ranges about 20 years ago?

Some shooters are just now discovering this and still throw a fit.

Just doesn't matter to me, I have a five gallon bucket of each....sort it anyway

Randy

One advantage with the SPP version is you can use rifle primers if you are in a pinch and desperate. Rifle primers will not readily work in LPP brass.

Also, I remember shooting an ICORE match some years ago. There were a few Canadian competitors and they preferred the SPP version. I think it had something to do with legislation. The moral of the story is to NEVER throw away perfectly good brass, as somebody somewhere can use it. And sooner or later that somebody might be you.

Since Ive only just started to shoot cast in my 1911's and I had collected a good supply of sp brass I decided to dedicate the SP brass to cast and LP brass to jacketed. So far I have had zero issues and someone else mentioned above Ive been shooting some fine groups. Could be the bullets or a number of other things.

That's crazy - great idea! I like it!

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I have my moments.

Its just a way to keep them seperated, give them a dedicated purpose.