i built a 357 max with 22 in bbl.also had one with 13 barrel tubed to 20 in oal....the 13in shot faster than 22 in ...cut it to 18 in and was just as fast as 13 in............16 is great............my 9 year olds is 17in..the accury suffers but not that much, still able to hit and kill bambi at 100 yards or less...so cut away,,,,,,,,,,,,,,,,,,,,,,,,jb