Magnum Pistol Primers

Discuss ammunition and reloading topics here.
Post Reply
User avatar
thom
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 1220
Joined: May 20th, 2018, 10:49 pm
Reputation: 21
Location: chandler, near IKEA

Magnum Pistol Primers

#1

Post by thom »

I just got hold of some Federal Smal magnum Pistol primers. Can they be used for 9mm without any problems or what should I look to change in the recipe?
Thanks,
Thom


User avatar
Suck My Glock
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 8816
Joined: May 25th, 2018, 3:01 pm
Reputation: 8
Location: Peoria

Re: Magnum Pistol Primers

#2

Post by Suck My Glock »

My experience has been back off the charge weight by 5% and you'll likely be OK. If your powder charge weight is 4.0 grains, for instance, back it off to 3.8 and see if you get similar results as you would with standard primers and 4.0 grains.
User avatar
thom
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 1220
Joined: May 20th, 2018, 10:49 pm
Reputation: 21
Location: chandler, near IKEA

Re: Magnum Pistol Primers

#3

Post by thom »

Thanks
Thom
User avatar
Remow2112
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 167
Joined: May 30th, 2019, 9:06 pm
Reputation: 3
Location: Tucson, AZ

Re: Magnum Pistol Primers

#4

Post by Remow2112 »

This will answer your question.

:)

User avatar
338lapua
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 1411
Joined: May 18th, 2018, 8:57 am
Reputation: 6

Re: Magnum Pistol Primers

#5

Post by 338lapua »

Suck My Glock wrote: July 7th, 2022, 11:02 pm My experience has been back off the charge weight by 5% and you'll likely be OK. If your powder charge weight is 4.0 grains, for instance, back it off to 3.8 and see if you get similar results as you would with standard primers and 4.0 grains.

There is no likely be alright about it. They will be fine and you will not have any problems with them at all. Same with standard small rifle primers. The small primers are the same damn cup for both rifle and pistol and they contain the same charge so there is no real difference in pressures. Most I have seen in a pressure spike between primers is a couple hundred psi which means there is no real difference between a 9mm at 38,000psi or 38,200psi. I run same powder charge regardless of primer used.
User avatar
Firewhenready7
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 81
Joined: June 3rd, 2018, 8:50 pm
Reputation: 0
Location: Vail

Re: Magnum Pistol Primers

#6

Post by Firewhenready7 »

Good information to know....Thanks
Post Reply