Small Pistol vs. Small Rifle Primers
- Thread starter donaldb
- Start date
- Status
DUCKNDAWG
Member
NO srp are actually of different size than the spp. so it is NOT a good swap just go get more spp.
NCsmitty
Member
Other sites have discussed this and it seems to be done quite often. The main differences are the cup thickness but no one offers info on the different flame fronts and changes in pressure that might occur. If you're loading near max loads, I would be cautious and try a few for effect. You weapon needs to have sufficient pin force to ignite the thicker cup.
NCsmitty
NCsmitty
Jim Watson
Member
What caliber and gun?
I have loaded 9mm with small rifle standard primers. They do ok. A small pistol magnum primer gives higher velocity and presumably higher pressure than a small rifle standard.
Before they brought out a magnum primer, Federal recommended using small rifle primers in .357 magnum.
I would not use small rifle primers for a da revolver; so many are "tuned" with softer springs that misfires might result.
I have loaded 9mm with small rifle standard primers. They do ok. A small pistol magnum primer gives higher velocity and presumably higher pressure than a small rifle standard.
Before they brought out a magnum primer, Federal recommended using small rifle primers in .357 magnum.
I would not use small rifle primers for a da revolver; so many are "tuned" with softer springs that misfires might result.
Linear Thinker
Member
The SP and SR primers are same size, but with different cup thickness/hardness and different amount/brisance of priming compound.
Large Pistol and Large Rifle primers are different in height, and cannot be interchanged.
I would not use SR primers in 9mm for the following reasons:
.You need to reduce your load - the SRPs will produce more pressure, which may result in primer leaks and other pressure signs. Ask me how I know.
.SRPs need a harder strike due to thicker/harder cups, your loads may be less reliable
LT
Large Pistol and Large Rifle primers are different in height, and cannot be interchanged.
I would not use SR primers in 9mm for the following reasons:
.You need to reduce your load - the SRPs will produce more pressure, which may result in primer leaks and other pressure signs. Ask me how I know.
.SRPs need a harder strike due to thicker/harder cups, your loads may be less reliable
LT
ReloaderFred
Member
The only calibers I use small rifle primers for in pistols are hot loads in .38 Super and for 9x23 Winchester, which specify small rifle primers, due to the increased pressure of the round.
You'll be better off sticking with small pistol primers in the 9mm. I'm not saying it can't be done, but should only be done with judicious load workup.
Hope this helps.
Fred
You'll be better off sticking with small pistol primers in the 9mm. I'm not saying it can't be done, but should only be done with judicious load workup.
Hope this helps.
Fred
- Status
