I know, this is crappy ammo. I know it is not subsonic, but hey, it's all I had at the moment. I tend to have at least one or two of these every magazine. The can is a new YHM Cobra. The recoil spring is new, but the magazine springs are old and feel a bit soft. These are all live rounds, no empty cases. What could be going on here? Magazine springs or underpowered ammo?

In your first picture did you lock the slide back or did the live round partially chamber before the slide began to strip the round out of the magazine.

Will this happen without the suppressor?
Have you shot the threaded barrel without the suppressor?
Do you have some more mags to see if it happens?

BTW my AAC doesn't do that to my 226

Try using different ammo.

quote:

Originally posted by bdavis:
In your first picture did you lock the slide back or did the live round partially chamber before the slide began to strip the round out of the magazine.

Will this happen without the suppressor?
Have you shot the threaded barrel without the suppressor?
Do you have some more mags to see if it happens?

BTW my AAC doesn't do that to my 226

All pics were shot as is, right when the malfunction occured. The slide was jammed in each pic. Zero malfunctions without the suppressor. I have shot with only the threaded barrel, zero malfunctions. I have 5 magazines, all with similarly weak springs.

quote:

Originally posted by joshrunkle35:
Try using different ammo.

I also used Remington 147gr FMJ. I had much fewer of these, but still an occasional one.

I have many questions...

Have you cleaned the Nielsen device in your suppressor?

Who's threaded barrel do you have?

How will the gun work without the suppressor and still using the threaded barrel?

Get some Winchester 147gr HP seems to work great for me..

The only way I can see this happening is if the top round in the mag is being freed from the magazine as the slide is traveling rearward. (My guess is that the complex set of impulses due to the Nielson device may be helping this) Once the slide travels fully to the rear and then moves forward to strip off the round the was second down (but is now at the top of the mag) it either kicks the loose round into the chamber or out the ejection port depending on how the loose round is oriented at the time of impact.

So if you tried stronger mag springs it may exert more upward pressure to hold the rounds in the mag under recoil.

This is purely conjecture but mag springs are cheap and you needed them anyway.... right?

I do not think that who did the threading of the barrel makes any difference. He has not had baffle strikes and he has used the threaded barrel without the suppressor without incident.

quote:

Originally posted by sig228-gsr:
I have many questions...

Have you cleaned the Nielsen device in your suppressor?

Who's threaded barrel do you have?

How will the gun work without the suppressor and still using the threaded barrel?

Get some Winchester 147gr HP seems to work great for me..

Nielson device cleaned and oiled.

Factory threaded barrel.

Zero malfunctions shooting w/only threaded barrel.

quote:

Originally posted by bdavis:
mag springs are cheap and you needed them anyway.... right?

I will probably just go ahead and get some new ones.

It's the can. Contact YHM and describe your problem.
zzz

I'm gonna have to agree. If it's not the ammo, which would always be my first thought, it's the can.

quote:

Originally posted by f2:
It's the can. Contact YHM and describe your problem.
zzz

I'll try it some more when I get some more 147gr in that isn't Wolf. If it continues, I think I will have a talk with them.

Yep, I would say its the can. I shoot WWB, CCI, UMC, PMC and Wolf often without any problems thru my Evo9/Sig P229, both 115gr and 147gr.

Call them.

I called Yankee Hill and talked to Steve. He said that he thought it was a very strange case; he had never heard of this happening. The only thing he could think to do was try shooting a couple hundred more rounds to smooth out the piston, or change the magazine springs. I will do both. Live rounds are just flying out of the top of this gun whenever the top round in the mag nose-dives. It happens with the Speer Lawman 147gr as well. I'll make an order from TGS and see how it goes. I'll keep you guys posted.

I would say the can is overboostered or the gun is under springed. Looks to me like the recoil enhancment is causing the top round to jump out of the magazine. I would try a new factory magazine in case the feed lips on the magazine are spread letting go of the cartridge to easily, and or I would try an overpowered recoil spring to lower the slide speed I think the slide is hitting the rear stop so hard it is flipping the gun hard enough it is popping a round loose then trying to feed the next round.

Also try very tight grip on the gun to keep the flip momentum down.

I have never seen this before.