Pistol mag primers 9mm

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For Minor they're fine. For Major, that would depend on your load.
The difference between magnum and standard primers is around a 5% increase in velocity...YMMV.
 
I would not do it on such a small case. The mag primer may have enough energy to unseat the bullet preventing a complete burn. May have enough to drive the bullet far enough into the rifling to load another round with a stuck bullet on a squid. Then something real bad will happen if you set one off with the obstruction.
 
I have used thousands of small pistol mag primers and HS-6 for 9mm
It actually cleaned up load and gave better Chrono readings, loading on the lower middle of min/max
I seem to remember that mag primers were preferred with ball powders at one time ,
 
I loaded a few (maybe 30) 9mm rounds using CCI 550's. I had about a 20% FTF in one of my semi-autos (not going to mention the brand and start another hate fest). When I shot the same rounds, dented primers and all, in my Rock Island 9mm revolver, they went bang. So, no more mag primers for me in 9mm.
 
Changing from regular SP to Mag SP, rework your loads, especially in such a small case. Start minimum and work back up. Mag primers can increase pressure.
 
I ended up with two thousand SRM. They're going in something and I don't load for rifles yet!:D

I actually already tested about 20 rounds of a mid range 357 magnum load with HS-6 using small rifle magnum primers. They shot like normal out of two different Rugers. I was mostly checking to make sure the primers weren't too hard. Sometimes in the future I'll do it right and work up more loads, run them over the chronograph and get some groups.
 
Blue68f100 said:
The mag primer may have enough energy to unseat the bullet preventing a complete burn. May have enough to drive the bullet far enough into the rifling to load another round with a stuck bullet on a squid. Then something real bad will happen if you set one off with the obstruction.
Click to expand...
May happen. More so with light neck tension/bullet hold. Minimum .002" Measure before & after seating bullets.

https://www.shootingtimes.com/editorial/ammunition_st_mamotaip_200909/100079
See "Too Much Primer"
 
I've shot a couple of boxes of 9mm loaded with magnum primers now with zero problems. I stayed away from max loads and will be getting some standard SPP someday, I hope.
 
I loaded many thousands of mag primers in 9mm during the last panic. I couldn't tell the difference in my low-to midrange plated loads.
 
On a side note, small rifle primers will also work with all of the magnum primer caveats plus one. When using small rifle primers, make sure your pistol will set them off. Because of the stiffer cups, some firearms will not set off small rifle primers. Do a handful of test loads and go from there.
 
I have used 550's to save my 500's in 9mm. I load light for that round and have not had any issues. That's using 115gr and keeping the speed around 1000 fps. As with any component change, work a load up just to be safe.
 
Glad this thread came up, I mistakenly bought Rem 6 1/2, rushed through order without checking. Anyway Loaded them in my .38 spl but haven't gotten to range yet to test. Started at the low range of powder and don't expect any issues. Well, maybe the main spring thing which I didn't realize until viewing the video, thanks.
 
The key is whenever a component is changed, do a load workup. It is not wise to just change an important part of a handload and resume with a tried load. Magnum oprimers and rifle primers are a little hotter, changing the charistics and pressure of the load. So instead of just jumping in with a different, different performance component, just start over. If one is concerned with "using up all my primers on testing" load a few at starting levels and try them. Ninety nine percent of all the starting level loads I've put together performed OK and some very good. I learned long ago; whenever you change sumpin', start over. Reloading 101...

Jes my methods that have worked quite well for over 40 years (but once I "grew up", recovered from "Magnumitis", I quit chasing velocities and loaded primarily for accuracy and functioning). I had a squib in 1970, no Kabooms of "too hot" handloads...
 
mdi said:
BTDT a few times. But like any component change, do another load work up...
Click to expand...
^^^ This, exactly. It's a good habit to be in that any time you change a major component you re-work the load, starting at published lows and working up - or down - in small increments, like 0.1 or 0.2gr. and test for abnormal changes. For example - Normal change: a 5% change in avg. velocity. Abnormal change: detonation instead of deflagration.
 
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Anyone have chrono data with the primer switch? I've seen the SuperVel video that showed absolutely no difference in their (?) 9mm load w/ SPP, SPM, and SRP. I scored some Federal 205s from the local Academy and am anxious to try them the first chance I get.
 
135 Blue TC @1.125
4.6gr True Blue thrown from Lee Auto Disc
Glock 17 Gen. 4 Timney trigger, all else OEM
Fed. 100- 10/10 fired 974 fps 5 shots EV29 SD11
Fed. 205- 10/10 fired no chrono
Rem 7 1/2- 5/10 fired no chrono; the 5 that didn't fire, fired on the second hit
CCI 400- 10/10 fired 971 fps 5 shots EV15 SD5

YMMV
 
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