Originally Posted by ThunderCactus
Doing conversions, by changing chrono settings or mathing it out on your phone, is what takes time.
All you're doing is converting an fps limit to a joule rating for a specific weight of BB
So the shorthand way to do it is just find the maximum joule limit on the common weights of BBs and write them all down. As long as you're under that limit, you're good.
"What weight of ammo you using?"
tap tap tap
all shots under the limit
get your ziptie and GTFO
Except when people give you the wrong weight, either accidentally......or on purpose.