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Hello. Back in April, I reported on my observations of a PX4 9mm I bought. In that initial outting, I mentioned that 435 rounds were fired with zero problems.

Since then, off and on, I've been putting more rounds through the gun and waited to comment until I'd reached at least 1000 more shots. I've not cleaned or lubed the pistol other than to wipe down the exterior and keep notes on how many rounds were eventually fired before cleaning and lubing the pistol.

That number is 1022 shots, which consisted of factory ball, quite a few warmish handloads using jacketed or plated bullets and a couple of hundred assorted factory JHP +P. Before the shooting started, the pistol was lubed "normally" using plain old Rem-Oil, but not between range trips.

My PX4 didn't get "sluggish" or suffer any feeding, extraction or ejection problems.

When I field-stripped it, the barrel and lug area were practically dry, with but a tiny remnant of the original oil left. Would it have gone another 1000 shots w/o cleaning; I do not know, but neither am I too concerned. I just do not see firing that many shots w/o being able to clean the pistol.

I understand that results from my single pistol are both statistically invalid and not necessarily what others might experience, but it wouldn't surprise me if it is just par for this model, which so far has been reliable to the tune of 100%.

The PX4 Storm 9mm is not such a favorite of mine that my Brownings, Glocks, SIG-Sauers, etc are going anywhere, but in my view it continues to serve very reliably and with better mechanical accuracy than I initially expected.

1022 shots betweening cleaning/lubing is not a marathon or torture test, but it is enough in my opinion for me to state that I can find nothing inherently "wrong" with Beretta's rotating barrel in the PX4 Storm.

I think I'll just shoot mine and not worry about it. So far, there's just been no reason to.

Best.