A quick and inconclusive test of the mini-carbine 2240 with the Hammers earlier. Will try the Crosman flat heads later, hopefully. Maybe a little cool for the CO2 to be totally happy today? The Hammers fed into the breech easier than the Hobbys. I'm guessing that the Crosmans will be a tighter fit and, henceforth, maybe better in the Mercury S when I get the chance to try them through that?