Just read a thread on a outdoor forum, pistol break in

Rumor has it, that is one of the reasons why FBI (and others) moved to 9mm. It is more manageable by more people.

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and less expensive, plus used by everyone, so in case of going completely empty they can use ammo from other people involved in the event.

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Break in isn’t something I’d consider unless a new pistol was a very tight target gun like an F Bob Chow or similar. Otherwise it should function as it came from the factory or something’s defective, however I would function check it with a generous sampling of a variety of ammo and magazines before trusting it as a fighting tool.

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Many of the pistols and revolvers I have used over the years likely did not NEED a break-in period, but I do it anyway. Mostly this is about gaining trust in the system in my own hands, and I genuinely enjoy shooting anyway–so, I don’t see a downside. I reload duplicators of my carry ammo, so that saves some money and keeps me out of the bars and casinos.

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For me is it does not matter, It’s gonna get a good one anyway. When I get a new pistol I’m going to shoot a few hundred rounds the first trip to the range,

I recently bought a Shadow System MR920 which is the first pistol I’ve bought in over a year, so my regular EDC pistol is very broken in at this point. The SS owner’s manual said to shoot 200 rounds, so I shot 250 rounds including my hollow-point rounds that I’ll actually carry and had no malfunctions. However, having a new pistol I noted that it is quite stiff relative to my other pistol and it’s taking a bit to get use to the slide and mag release. I’m not sure what the right round-count is, but shoot until you’re comfortable at a minimum.