[jaflowers]

So I finally took my new PS90 to the range. I had never fired it and have only changed the barrel shroud with the Huntertown Arms shroud so I can use my suppressors while waiting for my SBR stamp. The shroud switch was a breeze, no problems and I'm pretty good with stuff like this so I'm confident in the switch over. At the range I had two mags loaded with SS197SR. Made it through 35ish rounds with no suppressor and all was well, shots were consistent at 50 yards and grouping well after zeroing my Z-Point. Decided to try out my Spectre II, have used it a lot on my various 22s and it's working great. The very first shot fired but after that nothing would, and a look at the chambered rounds showed no primer hits. Tore it apart at home and finally found that the one round that fired suppressed, the neck and shoulder of the brass had separated from the body of the brass (which had ejected).

Now I'm pretty familiar with shooting suppressed, had the suppressor screwed on right with a spacer needed for this shroud, so I'm confused. Any ideas why the neck and shoulder would separate? Thanks for any help.

Jason

 

[Buffman]

It happens from time to time with factory rounds even SS197SR. I'd have to say it was pure coincidence.

 

[SONYtec]

High pressure would do that.

Make sure your gun is clean, especially the chamber. Try a little bit of dry lube in the chamber, not a lot.

 

[jaflowers]

Thanks for the replies. Cleaned the daylights out of the chamber and the whole gun in general, you could eat off this thing now. I'm going back to the range this week and will report back what happens. Plan on shooting 1) without suppressor 2) with Octane 45 (bigger bore to release more gas) 3) with Spectre II. Hopefully I'll have no issues.

 

[jaflowers]

Got back from the range a little bit ago and am happy to report a healthy little carbine. Unsuppressed and with both my Spectre II and Octane 45 it ran flawlessly. I think the Octane actually sounds better and decreases the recoil, what little there is, better than the Spectre II does. Put two full 50 round mags through it, only 15 were unsuppressed, and it ran like a champ. Thanks for the advice. All I can figure is a bad round and unlucky coincidence. Here's a picture of it with the Huntertown Arms shroud and the Spectre II. Can't wait for my SBR stamp to get in.

 

[Troublesx10]

Thanks for the replies. Cleaned the daylights out of the chamber and the whole gun in general, you could eat off this thing now. I'm going back to the range this week and will report back what happens. Plan on shooting 1) without suppressor 2) with Octane 45 (bigger bore to release more gas) 3) with Spectre II. Hopefully I'll have no issues.

a lot of people including myself like the 9mm can for the 5.7 round. Try that if I got it

 

[mjk1]

Buffman has pretty good feedback regarding this round ... perhaps some of the best available.

 

[SONYtec]

Got back from the range a little bit ago and am happy to report a healthy little carbine. Unsuppressed and with both my Spectre II and Octane 45 it ran flawlessly. I think the Octane actually sounds better and decreases the recoil, what little there is, better than the Spectre II does. Put two full 50 round mags through it, only 15 were unsuppressed, and it ran like a champ. Thanks for the advice. All I can figure is a bad round and unlucky coincidence. Here's a picture of it with the Huntertown Arms shroud and the Spectre II. Can't wait for my SBR stamp to get in.

Glad to hear that all is well.

Make sure you clean the ejector, and extractor, and that they move freely. Can cause issues, just like any other weapon.

 

[uvausmc]

jaflowers,

Glad to hear that Huntertown Arms shroud is working out for you.

I actually just went to the range today and had the same issue shooting my PS90 SBR suppressed. First time I had seen it happen so been doing some research and I came across your thread. Glad to see it worked out for you. Guess I'll be going to scrub the hell out of my chamber and give it another go.

I'm guessing the added fouling from shooting suppressed plus maybe the coating that is on the PS90 brass just got the case shoulder stuck. Not sure about yours but the part that was left in the chamber came right out after I got home and punched to bore with a cleaning brush.