Just purchased 24/7 OSS in a 40. I put 200 rounds through it and it shot only ok with no FTF or FTE. I took a Concealed Carry class on the 22nd of Nov. A fellow firefighters Ruger was jamming and no one could quickly figure it out. I was shooting my EAA Polymer Witness in a 40 anyway and offered the use of my OSS. Man, that guy could shoot and when I tell you all the rounds in a nice tight hole. It was heart breaking and a joy at the same time. I wish I could shoot it that good. Anyway another 200 rounds through it with no FTF or FTE. I hope I can at least shoot it as well as my EAA with time. I've had several good comments on the gun. Overall, I like the fit and feel of the gun. Seaking of 45's, I ordered mine initially in 40 and came into the gun store as a 45. I have several 40's and reload for this platform. It was very hard to turn the 45 down. I do have 45 reloading dies already that were given to me. If I keep enjoying the gun I may have to consider the 45.
Vince