Since shortage of LRP, has anyone tried to use LPP in place of LRP? I know LPP abit shorter, will it be any differences if seated slightly deeper? Any change in grouping?
Printable View
Since shortage of LRP, has anyone tried to use LPP in place of LRP? I know LPP abit shorter, will it be any differences if seated slightly deeper? Any change in grouping?
What were you thinking of trying them in? Might not handle the pressure
Pistol primers are softer in the cup to accommodate the generally lighter strike of the firing pin. Pistol calibers also generate lower pressures than rifle ones. For these reasons they aren't recommended in high power rifle loads as there is a severe risk of them puncturing. They are perfect for subsonic or cast bullets. though
They are also dimensionally shorter.
Attachment 228568
I was thinking reload some 308 win using LPP and try them in my tikka t3 22inch barrel. Can I use low power load to avoid the pressure issue?
LRP 3.2mm compare to lpp 3.05mm
Yep, that’s kind of worried me as well. Found a site talked about this as well. https://castboolits.gunloads.com/sho...imers-(308-Win
Was thinking this morning regarding the shortage of primers. Would it work using SR primers in a pistol cartridge intended only to be used in a bolt action rifle? Would save me having to try and find a decent quantity of pistol primers.
Done that for years with no worries
Used them in my 22 Hornets for years and the Hornet should be a bit hotter than most pistol cartridges. I still wear safety glasses though with one of my Hornets as it's an older design with not great gas handling if a primer is pierced. I checked the tips of my firing pins for any roughness. Get excellent groups, better than SRPs.Quote:
Originally Posted by Husky1600#2
I have accidently used LPP in my 6.5 cm before, primers all ended up very flat and 90% ended up punctured by the firing pin.
now how about a .44magnum used in rifle....asumable both rifle and hang gun use the same ammunition...so which primers are supposed to be used???
"Low power" rifle loads are probably still gonna be higher pressure than hot pistol loads. 308 Winchester is a 60,000 psi cartridge. 45 ACP (which uses LPP's) is 19,000 psi. 44 Magnum (which uses LPM's) is 36,000 psi. So unless you're gonna reduce your loads >50% in terms of pressure, I'd say you're asking for trouble.Quote:
Originally Posted by brick118
Trail boss for subsonic loads MIGHT be low pressure enough to do safely. But then again rifles tend to give primers a much stronger whack than pistols (either that or they tend to have more firing pin protrusion), so your chances of piercing one are probably still gonna be up there.
The fact you needed to ask suggests you shouldn't be considering it. IMO, you should buy factory ammo for now until you can get the right primers.
I do the other way in my 44 magnum rossi lever gun, i use winchester LR primers instead of pistol primers and it causes no issues. Mainly because i have no pistol primers and couldnt find any so i just went straight to using the LRP since i have a decent supply for my other rifles.
yip Im using rifle primers in rossi/begera but wondered if the SLIGHTLY easier to get large pistol primers might be ok too....guess for subbies the pressure issue dissapears???
Anyone know if theres a gauge for checking primer pockets
THERE ARE PLENTY OF PRIMER UNIFORMING TOOLS.......
I was thinking a gauge that you can try in the primer pocket that tells you its to big. Could probably make one with the correct sized drill shank
Here are my gauges. The wooden handled one I made using an old RWS LR primer. Any primer pocket that the gauge goes into over 1/2 its depth is on its way out.
The other 2 are go/no gauges from Sinclairs. One SR and one LR.
Attachment 228997
Using the OK Still end you can judge the condition of the pocket by sideways movement of the gauge. That's even if the Not OK end still won't go in. If the Not Ok end goes in she's stuffed.
I might try and make a sr one. Did you glue the primer to the steel rod
The rod is just a small machine screw I had lying around. Being threaded it hangs on with the epoxy used.Quote:
Originally Posted by blip
IIRC I drilled a hole thru the primer so that the open end goes into the pocket same as it would if it was a live one.
The other way round (back the front) the cup may be slightly flared from firing. Just try some fired primers to see what they feel like.
Drilling a hole and having a suitable screw for a SRP may be a challenge.
I made it about 20 years ago.
I've heard of people using them with cast loads. Safer just bending over for factory ammo if you are at this point.
I've been using LPP for a few years now in my Berdan to Boxer converted 7.62x54R @ normal pressures & have had no problems with them...no blow backs or backouts & deprime as normal.
