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Subject Topic: 45acp Large vs small primers? Post ReplyPost New Topic
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Atavist
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Posted: December 09 2017 at 2:14pm | IP Logged Quote Atavist

So all the 45acp I've ever loaded was in winchester or hornaday cases... they take a large pistol primer... was recently given a bunch of blazer brass and low and behold it takes a small pistol primer... looking at data I now realize this is apparently common... but it's new to me... No mention of different loads for different size primers... i'm guessing this is one of those cases where size really doesn't matter?
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Old Ranger
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Posted: December 09 2017 at 2:21pm | IP Logged Quote Old Ranger

Nope, not really.
Just a pain in the posterior to sort if you're half
asleep.

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hdwhit
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Posted: December 09 2017 at 9:28pm | IP Logged Quote hdwhit

It is not a "six of one, half-dozen of the other" thing with Large and Small primers in 45 ACP. Large primers will produce slightly higher velocities and this can change the "feel" of the gun and affect point of impact of the bullet.

The effect is big enough that if you are competitive shooter, you will probably notice a difference. If, on the other hand, you just enjoy poking holes in paper, you probably won't notice a difference in performance.
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M700
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Posted: December 10 2017 at 5:53am | IP Logged Quote M700

hdwhit - welcome to the forum!

And I'd agree. They're a pain to the handloader if you've got mixed brass.

Both large & small primers work fine though.

Guy
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rich2
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Posted: December 10 2017 at 7:29am | IP Logged Quote rich2

Small primed .45 cases were/are loaded with lead free primers. Unless you are loaded max loads, load with the same recipe as you normally use.

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Desert Eagle41
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Posted: December 10 2017 at 8:34am | IP Logged Quote Desert Eagle41

I find the best answer is to pitch the small primer cases for 45 and then there is no confusion. Ha Ha. Craig

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Atavist
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Posted: December 10 2017 at 1:07pm | IP Logged Quote Atavist

yeah I will likely toss the small primer brass (or leave it at the range for someone else actually) but ends up of the 4 boxes of blazer brass i was given only 1 box of it was small primer... now that makes it even stranger... they were all 230gr fmj in identical boxes... strange.
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Old Ranger
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Posted: December 10 2017 at 1:56pm | IP Logged Quote Old Ranger

Ain't nuthin wrong with SP 45s. Just it's something
different and reloaders, like other folks, resist change.
Human nature.
But it is a PITA to have a bunch of 45s all ready to
prime and those Winchester LP primers are going great and
then you feel sudden and immediate hard pressure. Those
big primers sure bring things to a halt real quick when
you try to load em into a small pocket!

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Atavist
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Posted: December 10 2017 at 2:01pm | IP Logged Quote Atavist

that they do... took me a minute to figure out what was going on at first.... small or large doesn't really matter to me other than the pain of keeping the brass seperate. I have a habit of throwing multiple calibers in the tumbler all together... no biggy when they are distinctly different.. but don't want to waste time inspecting each primer pocket to see which size it is.
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Old Ranger
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Posted: December 10 2017 at 2:41pm | IP Logged Quote Old Ranger

I only run into this when I use the old Lee Autoprime
tool. Doesn't happen with the old Lyman 310 tong tools.
You can see the primer & the case head when seating
primers. Now and then one or two SP sneak into the tumbler and my old eyes miss em. Oh well. Besides, I'm in no hurry.

Edited by Old Ranger on December 11 2017 at 8:45am


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Paul B.
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Posted: December 10 2017 at 4:00pm | IP Logged Quote Paul B.

I remember when those small primer .45's came out. I was at the range
and picked up a large quantity. Took 'em home and sent Winchester an
E-mail. They were somewhat adamant about me reloading that brass,
being concerned about getting them mixed up with regular large prime
brass. So, I went and loaded them up anyway. Guess what. They
worked just fine. I'm careful to not get them mixed up and so far it's not
been a problem. Just don't mix them up and you're fine. It's good brass.
Paul B.
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RB in GA
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Posted: December 11 2017 at 6:13pm | IP Logged Quote RB in GA

Win, Fed, and CCI, others have been loading 45acp with
small pistol primer for some time. No doubt it's a cost
savings for them somehow. I bet that small primer pocket
would definitely jam up a progressive in a hurry. BTW,
did you know that 357 Mag started out life with LPP.

Range pickups are no longer an issue at my range because
every piece of brass including 22LR is picked up like
vultures over a dead carcass. We even got people now
sifting the bearms for lead.

Edited by RB in GA on December 12 2017 at 9:54am
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mikld
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Posted: December 12 2017 at 1:55pm | IP Logged Quote mikld

I haven't done any personal testing but shortly after small
primed brass started showing up in reloaders' stashes, I've read
a couple side by side tests and the difference between large
and small primed 45 ACP, with identical loads, was less than 50
fps. I don't have enough small primer brass to try any reloads
yet...

I have some of the Blazer small primer pocket brass, but the
only "problem" I've been able to determine is when a reloader
doesn't inspect his brass and dumps a small primed case in the
hopper of their progressive press along with the large primed
cases.

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Old Ranger
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Posted: December 12 2017 at 2:59pm | IP Logged Quote Old Ranger

Progressive. Isn't that the company Flo works for?


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RB in GA
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Posted: December 13 2017 at 6:41am | IP Logged Quote RB in GA

Old Ranger wrote:
Progressive. Isn't that the company
Flo works for?


That's correct Ranger.

Their Comprehensive 100/50/25 Progressive Press has the
best Auto feed in the business.

Edited by RB in GA on December 13 2017 at 8:35am
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Slick
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Posted: December 16 2017 at 3:16am | IP Logged Quote Slick

I just save off the small-primer .45 in a coffee can. When it fills up, I'll look into concocting a load for them. Eventually someday off in the future, people will ask "what are these .45 shells I'm finding with LARGE primers?" The coffee can will be the best answer for them too.

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Rifleman 52
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Posted: December 16 2017 at 4:18am | IP Logged Quote Rifleman 52

Hi Slick, glad to here from you. But back to the subject
of small primers. Back in the day 44-40 cal was loaded
with small primers because I have two really old ones
that are. They have silver jackets on them and really old
looking lead and small primers. My buddy picked them up
at a gun show because he knew I reloaded them.
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RB in GA
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Posted: December 18 2017 at 4:24pm | IP Logged Quote RB in GA

Good to hear from you Slick. I'm always interested in how
it is living on the left coast as a GUN owner?

Edited by RB in GA on December 18 2017 at 4:27pm
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Dragon
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Posted: December 20 2017 at 6:27am | IP Logged Quote Dragon

Like others have said, I set them aside, and load them to load at another time, same loads though.
I did have to start buying snall primers which I stopped buying when I switched to all big bore a few years back.
   


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mikld
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Posted: December 21 2017 at 9:54am | IP Logged Quote mikld

With the weather and forest fires in my area, I have a
lot of time on my hands so I visit several reloading
forums. Small vs. large primers in 45 ACP appears at
least once a week, and there's lot's of opinions given.
I haven't reloaded any small primed 45 ACP 'cause I
don't have more than 10-12, so out of curiosity, I
ordered 100 once fired small primed 45 ACP Speer cases
from Diamond K Brass. I'm one of those "I'll see for
myself" guys so I'm gonna load up a bunch of my
favorite 45 ACP loads (200 gr. LSWC
with Unique and 230 gr. FMJ with Bullseye) half in
large primed cases and half in small rimed cases. I'll
shoot both over my chrony and from the bench for
accuracy.Then I'll see for myself if there is truly any
advantage or disadvantage of either...

Edited by mikld on December 22 2017 at 2:49pm


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