While I subscribe to the 200 rounds of ball and a box of SD ammo practice before use it is more for my own familiarization than to "prove" the gun.

By the same token it is not a bad procedure for identifying defective magazines. I bought one of the second round of Remington R51s and the two supplied mags and two spares I bought were only semi-reliable. I complained to Big Green and they sent me 4 replacements, all of which worked well. Still I never carried the gun, simply because it did nothing my Shield wouldn't except fit in a PPK holster.

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I need ammo, not a ride.