Just ran a few rounds thru my 5” Duty received earlier this week.
75 rounds of 230 gr FMJ over HP-38
16 rounds of 230 gr Zero JHP over HP-38
16 rounds of Federal 230 gr JHP Hi-Shock
16 rounds of 230 gr Gold Dot JHP
Had 2 FTF on the Zero JHP and it was the 2nd round on the same magazine. Marked that mag and put to the side. Everything else ran just fine with the 2nd factory magazine and a Wilson 47D.
Groups we’re great at 15 yds and opened up just a bit due to rapid fire trying to see if it would fail to feed, which it didn’t after the magazine was set to the side.