Well I took the .45 back to the range on Thursday but I grabbed the wrong box of magazines (9mm) so could only firesingle shots. 5 rounds, no problems and accuracy still great.

Friday I made sure I had the correct mags and dropped into the range as I was driving past. Part way through the first full magazine I feel a much lighter spitting on my cheek and the impact goes low on the target, as if velocity was down.

On picking up the brass after the string I find one case split from the mouth to the base. On checking it was definately not a Starline case, so obviously range brass.

Just the one “ bad” experience out of almost 80 rounds fired. I can see an afternoon being spent sorting my brass and 1000 new cases charged to my credit card very soon.