I have a tin and they measure ~4.97 -4.98. These are the 11.42 gr. I have Jsb 13.73 gr and they measure ~5.07 -5.09. I'm thinking the ftt's are undersized. I don't know if I just got a bad tin or if they are all like that. In my Beeman 97k the jsb's shoot much better. I just bought a 50s and I'd like to verify size before ordering any ftt's to try out. Thanks
