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First post here!! Found this site while looking for the old MarkIII site. I just bought a clean MKII 22-45 for $100.00 and was looking for the latest info. My question concerns reloading 9mm for a couple of Glocks. I can't seem to find any standard small pistol primers anywhere and I have three or four thousand magnum primers. In the past I would never consider this kind of substitution but desperate times call for desperate measures. Would it be safe to start with a minimun load and work up from there?
Charlie

welcome to the forum.

WoW... congrats on the $100 "find"...
got peechers ? let us know how it shoots...
clean, inspect and lube and enjoy it...

Mag-primers... for 9mm
... I wouldn't

there just isn't that much leeway on the powder... only ~5grains

If you found a documented "load" of a specific powder that
specified 'Mag primers'... then you'd have something to work from...

min-load: with the HOT primer just might create MORE CUP-pressure
than is planned...

I can appreciate your situation of having plenty of something
and want to make good use of it...
but the Small-Mag primers should likely be used in .357 or
some-such larger-capacity-powder and case... than 9mm

other opinions and responses will vary...
but I'd rather you be able to type additional postings...
rather than we wonder why you never posted a followup...

-- toy

Welcome to the Forum!

There are some loads that are more forgiving of excess pressures than 9mm. I wouldn't use the small pistol magnum primers in a 9mm cartridge, there's too many ways to overpressure this cartridge without really trying. I know that there's some who've done this and lived to tell the tale, but that's putting a lot on the line.

R,
Bullseye

Thanks for the responces. Turns out that Powder Valley now has some Fed small pistol primers so I don't have to go to the dark side.
A friend of my hunting partner's son had the 22-45 and wanted to get rid of it. He said it jammed all the time and he needed money so he would sell it for a $100.00. That decision took about half of two seconds! A detail disassembly and cleaning was all it took to get it running. Today I added a VQ extractor and sear and HiViz front sight. Getting better. I have a set of 1911 grips off a Gold Cup I had years ago that I might try to install if I get to feeling brave. Will take some pics and try to figure out how to post them.
Charlie

I can't blame you. If someone said, "Here's a 22/45 for $100," I wouldn't have needed two seconds to think about it. My arm would have been in a sling for a couple of weeks from the strain of reaching for my wallet at hyperspeed. A little cleaning and care often brings temperamental firearms back in line. Enjoy that one, you definitely got a good deal on that one.

R,
Bullseye

Also Glocks don't fully support the case, so reloading is risky anyhow. A little over pressure and all that could get dumped into the frame of that polymer frame you're holding.

Which pistol loads are more forgiving than the 9mm? I assume ones that operate on lower pressure like .45acp or .38spl but most of the time my common sense is wrong

Those are the kinds of loads that are more forgiving of excess pressures because they are not already close to the SAAMI pressure limit. A 9mm load can drastically increase pressure just by overseating the bullet because it is already on the high end of the pressure window. Add a magnum primer and a few thousandths seating depth and now that round can be seriously over pressured.

R,
Bullseye

Welcome to the forum.

A $100 for a 22/45? An outstanding buy.

I'd take the advice of the reloading experts on magnum primer for a 9mm. I'd also look at one of the slower burning powders for reloading for Glocks.

Thanks for the welcome. I already had a MKII Govt Target as well as a S&W model 41 but I couldn't pass that deal up. About 95% in the box with two mags.
As to the 9mm, I located some standard small pistol primers so I won't be tempted to use the mags. I have been using AA #7 with 124 gr bullets with good results.
Charlie

I've noticed the primer supply around Richmond has been low. Seems like a problem all over.

greener wrote:I've noticed the primer supply around Richmond
has been low. Seems like a problem all over.

I buy some whenever I can,
before the "hoarders" get them.
-- toy

I see you are doing your part to prevent hoarding. Good job.
I've been trying, but the hoarders got there first.

OK. What's a hoarder. I like to keep at least 4 or 5 thousand around. What is the hoarding threshold? I don't want to be ostracized by the Gun Talk community.

DWS

DancesWithSquirrels wrote:OK. What's a hoarder. I like to keep at least 4 or 5 thousand around. What is the hoarding threshold? I don't want to be ostracized by the Gun Talk community.

DWS

DWS, hoarding is when you have more than you and I could ever use.
Got to watch out for them hoarders, also for old greys, I hate to shop at the super and trip over the ol greys but hter is always one ther when I get ther, maybe it's me?