Primer not detonating

[RiskyBusiness]

Wanted to try out small rifle primers on 9mm loads for my cz75 sp01. Will strike the primer half the time and go off and then the other half won't go unless it's n double action.

They work fine in my sp2022. I read somewhere that I can change out the hammer spring for something heavier or an extended firing pin. At this point I'm just asking for some more advice. Trying to avoid buying spp as I have over 7k of srp.

[bruce381]

you answered your own question they will not work 100% learn from your mistake and buy the right ones.

[pchang1201]

I've never had any problems using srp's in any of my pistols. What are the primer marks like on the ones that don't go off? Perhaps they are fractionally smaller than your spp's and when overly seated is causing your problem? I had Wolf primers which didn't also go off in my Glock 24 if I crushed them too much in my hand primer (resulting in light primer strikes) although they always worked in my other pistols with firing pins. Not crushing them down too much fixed the problem.

[hambam105]

So much for published Rules of Reloading you see in any reputable manual printed in the last 70 or so years.

[Rwnielsen]

So much for published Rules of Reloading you see in any reputable manual printed in the last 70 or so years.

CCI techs will tell you that their srp and spm primers are identical. I'm not sure about other manufacturers. I use the CCI srp's in my 357 gp and it has a light hammer spring. Not had any issues

[RiskyBusiness]

I've never had any problems using srp's in any of my pistols. What are the primer marks like on the ones that don't go off? Perhaps they are fractionally smaller than your spp's and when overly seated is causing your problem? I had Wolf primers which didn't also go off in my Glock 24 if I crushed them too much in my hand primer (resulting in light primer strikes) although they always worked in my other pistols with firing pins. Not crushing them down too much fixed the problem.

Marks look normal like it got hit hard enough to make a dent to go off. Ran 10 in my polymer sig and all went off. It's just the cz75 that's giving them trouble. I read the cup can be too thick for the cz well with the s&b primers at least. Read someone one with a cz75 had some other brand working like a charm. I'd rather not change the seating depth on the primers because I do them by hand not on the press. Anyone recommend a spring I can change on the gun?

[edgerly779]

Buy the right primers cheapskate. Rifle primers have harder cups requiring heavier pin strike force.

[tonyjr]

Not familiar with your gun .
If you can change firing pin [ right tools ] try shimming it .
Apiece of a slick [ throw away add that is slick ]
They are free and if it works, buy brass shim stock or check around -
Someone probably sells pre-made shims .

[boyguan]

Marks look normal like it got hit hard enough to make a dent to go off. Ran 10 in my polymer sig and all went off. It's just the cz75 that's giving them trouble. I read the cup can be too thick for the cz well with the s&b primers at least. Read someone one with a cz75 had some other brand working like a charm. I'd rather not change the seating depth on the primers because I do them by hand not on the press. Anyone recommend a spring I can change on the gun?

You can change the seat depth of primers? They kind of just bottom out

[wbunning]

You can change the seat depth of primers? They kind of just bottom out

[Elcid]

Try these.

https://cajungunworks.com/product/97041-cgw-reduced-power-p-0709shadowcz97-firing-pin-spring/

https://cajungunworks.com/product/61050-perfection-series-firing/

[RiskyBusiness]

Try these.

https://cajungunworks.com/product/97041-cgw-reduced-power-p-0709shadowcz97-firing-pin-spring/

https://cajungunworks.com/product/61...series-firing/

thanks! did they work for a similar issue you had?

[pchang1201]

The Wolf primers I had problems with actually had the opposite problem of not being seated in enough. I was using a hand primer and it was crushing them down enough that they wouldn't go off in my Glock. Seating them flush with the primer pocket made them 100% reliable in all my 40s. No doubt it was due to the hand primer doing a bit of crushing as well as seating.

I guess it could have been a case of the primer jacket being softer for the Wolf's than the Winchester's, etc so they flattened out more.

[M1NM]

Rifles work at higher chamber pressures therefore the primer cup is thicker/harder to withstand it. Try a pistol primer in a rifle and see how many pierced primers you get - PS watch your eyes on this one.

[RiskyBusiness]

Rifles work at higher chamber pressures therefore the primer cup is thicker/harder to withstand it. Try a pistol primer in a rifle and see how many pierced primers you get - PS watch your eyes on this one.

Wonder how many new reloaders will actually take that advice seriously