Sig issues, any advice?

[desertborn]

So I bought a brand new Sig P229 and a couple of spare mags a month or so ago. Finally got out to the range and discovered that the slide does not lock back on an empty mag. I checked my grip to ensure I was not accidentally hitting the slide release. I don't know if it makes a difference but I was using 115 grain Fiocchi ammo. None of my other fire arns have had this problen with this ammo but due to the shortage I can find nothing else to compare it to. Any ideas?

 

[ron73440]

Did you check it with more than one magazine?

On our issued Berettas, a bad mag will not lock the slide when it's empty.

 

[skidmark]

Insert an empty mag. Pull the slide back. If the slide does not stay back you may have a bad magazine.

Repeat with another magazine. If the slide stays back with that one the first magazine is bad. If the slide returns forward with the second magazine you have something wrong with the slide.

Is your 226 under warrant? Do you have a local gunsmith who could look it over (after conducting the testing above) and give an estimate of time & cost for him to fix it, as opposed to being without while it travells to NH & back?

stay safe.

 

[desertborn]

I tried it with several magazines and it does lock back manually. It almost seems to be short stroking. Thanks for the replies. I was trying to avoid taking it in to rhe gun smith.

 

[skidmark]

I tried it with several magazines and it does lock back manually. It almost seems to be short stroking. Thanks for the replies. I was trying to avoid taking it in to rhe gun smith.

Lock back "manually"? Hope you meant automatically.

If it's short-stroking you should have extraction/ejection problems most likely caused by a weakened recoil spring. If you have a new (spare) spring, compare the one currently in use against the new, unused one. If the current spring is longer it is worn out and should be replaced.

Thinking about it as I am typing - a marginally weak spring may not be allowing the slide to go fully back by some fraction of an inch sufficient so that tjhe hold-open catch is not engaged.

If you don't have a spare recoil spring you should get one anyway. See if it cures the problem. If it does, get another to be your spare.

If I'm not shooting a lot (who is, these days?) I check my spring once a year, which would work out to 2,600 rounds if I'm shooting one box of 50 per week. Springs are supposed to be good for between 5K and 10K rounds, depending on the manufacturer. Us paranoid folks usually replace them nearer 5K rounds just in case something might have gone wrong if we waited.

stay safe.

 

[Nascar24Glock]

Lock back "manually"? Hope you meant automatically.
If it's short-stroking you should have extraction/ejection problems most likely caused by a weakened recoil spring. If you have a new (spare) spring, compare the one currently in use against the new, unused one. If the current spring is longer it is worn out and should be replaced.

Thinking about it as I am typing - a marginally weak spring may not be allowing the slide to go fully back by some fraction of an inch sufficient so that tjhe hold-open catch is not engaged.

If you don't have a spare recoil spring you should get one anyway. See if it cures the problem. If it does, get another to be your spare.

If I'm not shooting a lot (who is, these days?) I check my spring once a year, which would work out to 2,600 rounds if I'm shooting one box of 50 per week. Springs are supposed to be good for between 5K and 10K rounds, depending on the manufacturer. Us paranoid folks usually replace them nearer 5K rounds just in case something might have gone wrong if we waited.

stay safe.

I think he means that the slide will lock back automatically whenever the OP puts in an empty magazine and pulls the slide back by hand; however, it won't lock back when firing the last round from a magazine.

And, regarding that, I would check to see if the magazine spring is weak.

 

[g21sfpistol]

if its a new gun i would assume new mags? granted you could get lemon mags or gun. i would check your grip to make sure your thumb or the meat of your hands isnt resting on the slide stop. i had that issue with and extened slide stop on my glock. so i put the factory one back in and no issues since.

 

[desertborn]

Yes, when I maually rack the slide it will lock back on an empty mag. They are brand new mags. I'm taking t in tomorrow to get checked out but I think I may just have some hum ammo. The recoil spring is appears to be fine hut I have nothing ro compare it to.

 

[desertborn]

Turns out it just didn't like my ammo. Thanks to everyone for their help.

 

[Nascar24Glock]

Turns out it just didn't like my ammo. Thanks to everyone for their help.

Your gun sounds like my Ruger Mark III Hunter. Most lead ammunition is fine; but Federal-brand copper ammunition tends to stovepipe jam twice out of every fifty rounds. Some guns are just picky on ammunition...

 

[cmr287]

Go glock :thumbup:

Sent from my ADR6350 using Tapatalk 2

 

[WalkingWolf]

This is not a uncommon problem on a new gun, yes it is short stroking, and will result in a few FTF. Basically it will grab the round on the rim, instead of the heel of the casing. You need hotter rounds until it breaks in, or lock your slide back and store it that way between shooting until the problem stops.

I posted this in another thread but I build up semi auto loads by taking this into account. I start at the low point, and load one round in a magazine, when the slide consistently locks back, then I proceed to test with full magazines. I have found that when the slide consistently locks back that there are no FTF, and FTE issues. I have developing semi auto loads in this fashion for years. Going to a heavier bullet, will sometimes cure and speed up the break in period.

 

[Happy Home]

Excellent approach to reloading . . . THANK YOU

[QUOTE/] I build up semi auto loads by taking this into account. I start at the low point, and load one round in a magazine, when the slide consistently locks back, then I proceed to test with full magazines. I have found that when the slide consistently locks back that there are no FTF, and FTE issues. I have developing semi auto loads in this fashion for years. Going to a heavier bullet, will sometimes cure and speed up the break in period.[/QUOTE]

I'm just starting .45 reloading on a Lee progressive, and finally found some 700X powder.

Thank you for the build-up criterion.