Magnum Pistol Primers
- Thread starter Arlin Mc
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They will work if that is all you can get. Start low and stop short of max data. If you use a chrono you can just stop when you reach the velocity you normally get with that load using regular primers. Some guns may have trouble setting the primer off. Light springed revolvers specifically.
Welcome to THR
Welcome to THR
The Bushmaster
Member
What Walkalong said...
Pumpkinheaver
Member
I have used them in the past and have had no issues(I did lower my powder charge some). Looks like I'm gonna have to use them for a batch of .38spl loads. Can't find standard small pistol primers anywhere in my area either..
ArchAngelCD
Member.
Arlin Mc,
Welcome to the forum.
It looks like you already got the correct answer to your question. Don't worry, I'm sure the panic buying will let up fairly soon now and you will be able to get standard SPP.
Welcome to the forum.
It looks like you already got the correct answer to your question. Don't worry, I'm sure the panic buying will let up fairly soon now and you will be able to get standard SPP.
bellyup039
Member
Thank you to all!
I sent my father-in-law to Gander mt to buy me small pistol primers and he came home with 1000 small pistol MAGNUM primers.
I also reload 9mm with 115 gr bullets with Unique.
I am glad to hear I can use them.
thank you to all!
I sent my father-in-law to Gander mt to buy me small pistol primers and he came home with 1000 small pistol MAGNUM primers.
I also reload 9mm with 115 gr bullets with Unique.
I am glad to hear I can use them.
thank you to all!
bellyup039
Member
UPDATE
I made some 9mm's and took the guns to the range.
SAME POWDER THAT I ALWAYS USED. I tried 3 different 9mm guns.
Glock, SIG, and Another Sig.
same results. Off a sandbag at 10 yds. yes TEN YARDS.
Groups were 4 inches HIGH at ten yards.
Groups were 6 inches high at 25 yds.
Normally, with small pistol primers my groups were so small you couldnt count the rounds at 10 yds and on target at 25 yds. So i still have lots of trial and error coming to work up an accurate load with the MAG Primers.
My normal load was 5.7 gr of unique.
I made some of them, and I made some at 5.2 gr unique. NO DIFFERENCE.
Next will be 4.7 and 4.2 of unique. Hope I can find a load that works accurately.
No exessive signs of pressure noted on the cases.
All primers fired without problems from all 3 guns.
I made some 9mm's and took the guns to the range.
SAME POWDER THAT I ALWAYS USED. I tried 3 different 9mm guns.
Glock, SIG, and Another Sig.
same results. Off a sandbag at 10 yds. yes TEN YARDS.
Groups were 4 inches HIGH at ten yards.
Groups were 6 inches high at 25 yds.
Normally, with small pistol primers my groups were so small you couldnt count the rounds at 10 yds and on target at 25 yds. So i still have lots of trial and error coming to work up an accurate load with the MAG Primers.
My normal load was 5.7 gr of unique.
I made some of them, and I made some at 5.2 gr unique. NO DIFFERENCE.
Next will be 4.7 and 4.2 of unique. Hope I can find a load that works accurately.
No exessive signs of pressure noted on the cases.
All primers fired without problems from all 3 guns.
ArchAngelCD
Member.
If the bullet is centered and it's only high just adjust the sights. If the sights are fixed make the necessary adjustment to your POA to achieve the desired POI like we all do with fixes sights.
bellyup039
Member
ArchAngelCD
It's not just high, but the groups are 4" round at TEN YARDS.
FROM A SANDBAG.
It's not just high, but the groups are 4" round at TEN YARDS.
FROM A SANDBAG.
ArchAngelCD
Member.
Well, I don't use Unique for 9mm rounds so I can't tell you first hand how it reacts with a Magnum primer but I find it very hard to believe the use of a Magnum primer alone is the reason for such large groups. I do know 2400 will work better with a standard primer over a Magnum primer when loading for the .357 Magnum but the results are only slightly off, not 4" and 6" groups. Are you totally sure the primers are the only changes made to your ammo? OAL, brass and bullets are all the same as used in ammo that grouped well in the past?
*EDIT*
I'm only mentioning 2400 because it's similar to Unique in that both are flake powders and 2400, unlike other Magnum powders usually achieves better results with a standard primer. I'm not recommending 2400 for loading 9mm ammo.
*EDIT*
I'm only mentioning 2400 because it's similar to Unique in that both are flake powders and 2400, unlike other Magnum powders usually achieves better results with a standard primer. I'm not recommending 2400 for loading 9mm ammo.
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bellyup039
Member
Yep, and that is why I was LIKE ***?
Same Certifed once fired brass, same lenghth, same press, Same powder.
I will keep trying.
I have used 2400 with 357's and it worked out very well for me.
But I haven't tried 2400 in a 9mm yet. Maybee i will look into that too.
Same Certifed once fired brass, same lenghth, same press, Same powder.
I will keep trying.
I have used 2400 with 357's and it worked out very well for me.
But I haven't tried 2400 in a 9mm yet. Maybee i will look into that too.
ArchAngelCD
Member.
I would NOT use 2400 in a 9mm case and I wasn't saying that. I mentioned 2400 because it's a similar powder to Unique in some ways like being a flake powder (but not burn rate) and unlike other Magnum powders it doesn't require a Magnum primer. It seems to give better results with a standard primer.
IMO w231 is a good powder for loading the 9mm and for something hotter when using a jacketed bullet Longshot gives me great results.
IMO w231 is a good powder for loading the 9mm and for something hotter when using a jacketed bullet Longshot gives me great results.
bellyup039
Member
Ok, I didn't think 2400 was good for 9's but i am at work and cant read my books here.
thanks
thanks
Magnum primers have more priming compound, and give more fire. Powder ignites and burns faster. The result should be like replacing powder to a slightly faster one.
For light loads it is perfectly fine. It may be even better than regular primer - higher pressure seals the chamber faster, gives less smoke and cleaner brass. For maximum loads the extra pressure is a problem - so go 10% down and work up as usual.
For light loads it is perfectly fine. It may be even better than regular primer - higher pressure seals the chamber faster, gives less smoke and cleaner brass. For maximum loads the extra pressure is a problem - so go 10% down and work up as usual.
billybob44
Contributing Member
Steve S-Yes.
Steve, I have used small rifle primers in 9mm-124gr. Plated Bullets, and in .357 target loads-148 HBWC. I lowered my charge on both loads .5-1.0gr. and loaded as normal. No difference noted to me. The only problem that I could foresee, could be from a light hammer strike, due to the thicker cup on a rifle primer. The rifle primer has no problem also to fire large volume .357 loads, in place of a Small Pistol Magnum Primer. I'm going to use what I got, until the supply comes back, at a "Livable" price!!
Steve, I have used small rifle primers in 9mm-124gr. Plated Bullets, and in .357 target loads-148 HBWC. I lowered my charge on both loads .5-1.0gr. and loaded as normal. No difference noted to me. The only problem that I could foresee, could be from a light hammer strike, due to the thicker cup on a rifle primer. The rifle primer has no problem also to fire large volume .357 loads, in place of a Small Pistol Magnum Primer. I'm going to use what I got, until the supply comes back, at a "Livable" price!!
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