I won a local lawman shootout open to all law enforcement in a 5 county area once. I was invited by my friend in the gun club who was the city PD training officer at the time. Including my buddy, the only real competition there was another civilian. ROFL. But, hey, these guys do an important job. I just wish they took their profession a little more seriously.
OTOH, I shot IDPA with a lot of SERIOUS LEOs out of the Houston area for quite a while. Lots of experts in that crowd and several serious master class shooters. I finally made it to a slow expert before I quit going over there. Some of these fellows were SWAT types. I also had a couple of LEO friends who are VERY good, one's a constable in my former prescient before I moved to Corpus. The other was a DPS officer who's moved. Oh, also a certain game warden in our club was quite good. So, you can't say ALL LEOs are lame on the shooting line. I'd say, though, too many of 'em are. Like I say, they should take the tools of the trade more seriously.
On the subject, I cycle my ammo out of my miini revolvers regularly. Remfire doesn't seem to do well long term carry in a sweaty south Texas pocket, especially down on the humid coast. I've found that after about a month in a sweaty pocket, my LR version will get a few misfires. .22LR being cheap, I just cycle 'em out every Sunday and shoot 'em up at the range. I don't carry the magnum all THAT much, usually just to church on sunday, so I fire it often enough in practice to keep it from becoming stale. I don't have this problem with centerfire ammunition, even reloads.