hardscrabble
04-09-2012, 07:32 AM
I'll put this right at the top with an edit, so anyone interested doesn't have to do the entire enchilada again.
New CM9, prepped and lubed as per tech section before firing. Test fired, 50 S&B + 50 M855 Nato + 10 Federal Hydra Shock. 7 misfires appeared to be light primer strikes. All fired second time around, primer indents looked identical to primers that fired first time through.
Ceased fire. Stripped and cleaned pistol, including removing striker, striker spring and cleaning striker channel. Everything appeared well-finished and clean. Reassembled with "dry" striker channel.
Test fired 50 S&B + 100 or so M855 Nato + 15 Federal Hydra Shock + a half box or so of cheap Win stuff and had 8 more mis-fires.
So I sent the darn thing back to the factory.
Ian was polite and cooperative and sent me a shipping label. They had the pistol 14 days. The repair report stated "replaced slide. Tested good."
They also replaced the barrel.
The pistol was dirty, obviously test-fired numerous times. (That's a good thing.) Dry-firing the pistol produces a different "click" than before service, when it was pretty anemic compared to now. I can't imagine what was out of spec with the slide that produces a harder strike.
I can't test-fire the pistol until later this week. I'll post again if there are continuing issues.
Here's the original post:
Hi, all.
I did a lot of research while looking for the "right" pocket pistol. I'm a die-hard 1911 guy, but would rather carry something a little less obvious. Which led me to this site and all the good advice here. Luckily, I had the lube chart and break in advice all printed out well before I ever bought the pistol.
The research all led me to the CM9, and it's about what I expected: a well-engineered, well executed compromise among the important variables: finish vs. price, size vs. usability and function, weight vs. materials, etc. I'd be well satisfied, except:
Out of the first 300 rounds fired, I've had 15 misfires that appear to be light striker hits. I'm trying to decide what to do next, and I thought perhaps someone here could speak to possible solutions. The 300 rounds included 100 rounds of S&B. Those boxes were 7 or 8 years old, properly stored and appeared new. Also included were 150 rounds of M855 Nato 9MM produced by Federal. M855 is a high velocity (1200fps or thereabouts) cartridge, the ammo is also 7 or 8 years old (in terms of when I purchased it) and appears new. Both the S&B and the Nato have functioned flawlessly in the past, but I can't test it at the moment because my only other 9MM (a P226) is getting a tenifer face lift. I also fired 50 Federal hydroshocks, and I don't recall any issues with those. All misfires fired the second time around (after a cool down) except one S&B, which exhibited a badly deformed primer after the second attempt. The strike on the primer of the misfired cartridges did not appear to be different from the strike on the brass that fired the first time around.
Firing occurred in two sessions. The pistol was thoroughly cleaned. I removed the striker, spring, etc. after the first session and ran it dry during the second, which did not result in any improvement. A close examination of the striker and the striker channel did not turn up any burrs, tool marks, residue buildup, etc. The pin looks perfectly normal, the channel, while not high polish, is nicely finished, as is the breech face. The trigger pull is smooth and without hesitation.
So: nothing looks amiss. It's misfiring badly with two types of normally reliable ammo, but not the third. The pistol is clean and correctly maintained. That only leaves these:
-it's malfunctioning in a way I can't detect, such as weak spring, short stroke, interference with the pin in some way, etc. (has to go back for service)
-or the ammo has a "hard" primer, and this pistol is not designed or intended to fire all types of ammunition (in that case, it's going to be sold and I'll wait on the new Sig 9)
-or the ammunition has somehow deteriorated
With all the experience here, I'm really hoping someone has had a similar experience and can relate the outcome.
Thanks.
New CM9, prepped and lubed as per tech section before firing. Test fired, 50 S&B + 50 M855 Nato + 10 Federal Hydra Shock. 7 misfires appeared to be light primer strikes. All fired second time around, primer indents looked identical to primers that fired first time through.
Ceased fire. Stripped and cleaned pistol, including removing striker, striker spring and cleaning striker channel. Everything appeared well-finished and clean. Reassembled with "dry" striker channel.
Test fired 50 S&B + 100 or so M855 Nato + 15 Federal Hydra Shock + a half box or so of cheap Win stuff and had 8 more mis-fires.
So I sent the darn thing back to the factory.
Ian was polite and cooperative and sent me a shipping label. They had the pistol 14 days. The repair report stated "replaced slide. Tested good."
They also replaced the barrel.
The pistol was dirty, obviously test-fired numerous times. (That's a good thing.) Dry-firing the pistol produces a different "click" than before service, when it was pretty anemic compared to now. I can't imagine what was out of spec with the slide that produces a harder strike.
I can't test-fire the pistol until later this week. I'll post again if there are continuing issues.
Here's the original post:
Hi, all.
I did a lot of research while looking for the "right" pocket pistol. I'm a die-hard 1911 guy, but would rather carry something a little less obvious. Which led me to this site and all the good advice here. Luckily, I had the lube chart and break in advice all printed out well before I ever bought the pistol.
The research all led me to the CM9, and it's about what I expected: a well-engineered, well executed compromise among the important variables: finish vs. price, size vs. usability and function, weight vs. materials, etc. I'd be well satisfied, except:
Out of the first 300 rounds fired, I've had 15 misfires that appear to be light striker hits. I'm trying to decide what to do next, and I thought perhaps someone here could speak to possible solutions. The 300 rounds included 100 rounds of S&B. Those boxes were 7 or 8 years old, properly stored and appeared new. Also included were 150 rounds of M855 Nato 9MM produced by Federal. M855 is a high velocity (1200fps or thereabouts) cartridge, the ammo is also 7 or 8 years old (in terms of when I purchased it) and appears new. Both the S&B and the Nato have functioned flawlessly in the past, but I can't test it at the moment because my only other 9MM (a P226) is getting a tenifer face lift. I also fired 50 Federal hydroshocks, and I don't recall any issues with those. All misfires fired the second time around (after a cool down) except one S&B, which exhibited a badly deformed primer after the second attempt. The strike on the primer of the misfired cartridges did not appear to be different from the strike on the brass that fired the first time around.
Firing occurred in two sessions. The pistol was thoroughly cleaned. I removed the striker, spring, etc. after the first session and ran it dry during the second, which did not result in any improvement. A close examination of the striker and the striker channel did not turn up any burrs, tool marks, residue buildup, etc. The pin looks perfectly normal, the channel, while not high polish, is nicely finished, as is the breech face. The trigger pull is smooth and without hesitation.
So: nothing looks amiss. It's misfiring badly with two types of normally reliable ammo, but not the third. The pistol is clean and correctly maintained. That only leaves these:
-it's malfunctioning in a way I can't detect, such as weak spring, short stroke, interference with the pin in some way, etc. (has to go back for service)
-or the ammo has a "hard" primer, and this pistol is not designed or intended to fire all types of ammunition (in that case, it's going to be sold and I'll wait on the new Sig 9)
-or the ammunition has somehow deteriorated
With all the experience here, I'm really hoping someone has had a similar experience and can relate the outcome.
Thanks.