i have a lot of goex and goex Old eynsford. and a few pounds of swiss. i am a goex man. i have a 54 cal. that eats 2f goex Old eynsford like candy. my 40 gets regular 3f goex and my 62 cal. always got regular goex. i do not like the hard ring that develops 2in up from where the ball seats caused by swiss after about 5 shots,,,,,,,,,,,,