Substitute magnum primers for standard?

laportechaarlie · Post by **laportechaarlie** » Wed Feb 25, 2009 6:48 pm

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

toyfj40 · Post by **toyfj40** » Wed Feb 25, 2009 7:49 pm

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

Post by **Bullseye** » Wed Feb 25, 2009 8:24 pm

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

laportechaarlie · Post by **laportechaarlie** » Wed Feb 25, 2009 8:51 pm

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

Post by **Bullseye** » Wed Feb 25, 2009 8:58 pm

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

SKnight · Post by **SKnight** » Wed Feb 25, 2009 9:32 pm

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.

Georgezilla · Post by **Georgezilla** » Thu Feb 26, 2009 12:54 pm

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

Post by **Bullseye** » Thu Feb 26, 2009 4:11 pm

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

greener · Post by **greener** » Thu Feb 26, 2009 5:59 pm

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.

laportechaarlie · Post by **laportechaarlie** » Thu Feb 26, 2009 7:44 pm

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

greener · Post by **greener** » Thu Feb 26, 2009 9:10 pm

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

toyfj40 · Post by **toyfj40** » Thu Feb 26, 2009 9:12 pm

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

greener · Post by **greener** » Thu Feb 26, 2009 11:11 pm

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

DancesWithSquirrels · Post by **DancesWithSquirrels** » Fri Feb 27, 2009 8:20 am

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

bearandoldman · Post by **bearandoldman** » Fri Feb 27, 2009 8:35 am

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?