''Clean'' 9mm reloads in straight blowback PCCs

[beltfed]

My chronograph disagrees. 9mm is not meant to go that fast.

In my Shadow I was pushing a 124 grain plated bullet at 1035 FPS (128 PF) and in the FX9 it was going 1210 FPS (150 PF)! The 1210 FPS load was obviously causing the gun to go out of battery prematurely.

IVI is pushing 124s at 1350fps in a shadow, so your load that you think is hot coming out of a rifle barrel isn't.

Try some +P...
It sounds like your FX9 is the issue.

 

[alpining]

Depends on what you are wanting.

Most folks loading heavy bullets with fast burning powder...This combo is generally about the dirtiest loading you will see, with a fair amount of fouling.

If however, you are running a compensator, ...You may wish to experiment. Do you compete with this ammo? Is one common load that is used between PCC and pistol advantageous to you?

Horses for courses, right? I make lots of different load types for lots of different reasons, if you know what I mean. I'm comfortable experimenting, just trying to get "free" info here to reduce my time spent going down dead ends. In this particular thread, I'm looking for any input on what reloading factors can help make ammunition run cleaner in a straight blowback PCC (9mm, 18.5" barrel).

No comps to worry about. And, I like having universal reloads for handgun and long gun when I can, but I don't need it.