friesepferd

a friend of mine who i shoot with a few times a week got a batch of cci primers instead of his usual winchester for one reason or another.
over 10% of them so far failed. . he is disposing of the rest of them and going back to winchester.
enough said.

edit: now that i think about it, it was well over 10%. once there were THREE in one magazine (7 rounds) that went click

P95Carry

I have found for years - personally and from other's experience ... the primer cups are heavier gauge material and/or harder. More ''oomph'' needed to initiate them. I don't see any problem chemically however - just need a bigger hit.

If a gun has plenty of 'zap'' in the FP energy then no problem but if marginal then they can be susceptible to a light strike effect.

I choose Fed and always have tho Win have done me fine too. Fed seem the ''thinnest'' of all. This problem shows up most when a revo it tuned up and lightened main spring - and then plenty of chances for misfires.

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Chris - P95
NRA Certified Instructor & NRA Life Member.

"To own a gun and assume that you are armed
is like owning a piano and assuming that you are a musician!."

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Bud White

As Chris said if you use CCI you have to have some oomphh anything with a lite trigger job will have a hard time setting them off.. Here awhile ago i had winchesters do the same thing

sisco

I used CCI's until I put lighter springs in my GP100 & SP101; got a lot of misfires due to light strikes with them. Never had that problem with Win. primers.

__________________
I'm a child of the 60's, but I got over it.

Freedomofchoice

Actually, I just read a thread on another forum, from a guy who just purchased a Lee Auto Prime tool (which I also use), and said it was NOT recommended to use Federal primers in this tool because of the chance of multiple detonation due to soft primers.

Supertac45

Good info for me to file away.

__________________
Les Baer 45
Sig Man
N.R.A. Patron Life Member
M.C.R.G.O.

dimmak

The only problem Ive had with them is picking them out of the receiver after loading too hot.....

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"...be water, my friend."

rocky

I have been seeing problems with Win primers with my .40 reloads. I have used CCI with few problems. I have seen many more squibs with Win primers. I am shooting a stock HK USP. I have no problem with primer strikes (AFAIK) but with lack of detonation in the primer.

__________________
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Nemo Me Impune Lacesset

Link to my kydex builds:http://rocknloadkydex.blogspot.com/

Colin

I have 3 9mm pistols all of them are having the same issue with CCI small primers not going off after 3 good strikes, funny my CCI large primers are fine.

Tubby45

Glocks are known for hating WLPs. First I've heard them not liking CCI. I run CCI and WLP in my G30 with no issues.