Rumor has it, that is one of the reasons why FBI (and others) moved to 9mm. It is more manageable by more people.
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.
Break in isnāt something Iād 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 somethingās 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.
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 anywayāso, I donāt see a downside. I reload duplicators of my carry ammo, so that saves some money and keeps me out of the bars and casinos.
For me is it does not matter, Itās gonna get a good one anyway. When I get a new pistol Iām 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 Iāve bought in over a year, so my regular EDC pistol is very broken in at this point. The SS ownerās manual said to shoot 200 rounds, so I shot 250 rounds including my hollow-point rounds that Iāll actually carry and had no malfunctions. However, having a new pistol I noted that it is quite stiff relative to my other pistol and itās taking a bit to get use to the slide and mag release. Iām not sure what the right round-count is, but shoot until youāre comfortable at a minimum.