two questions; first off, which 223 bullet weight are most 223 "drop compensators" calibrated to? (any optics in general, not just ATN)
also, are the different ATN "drop compensator" cams interchangable between different models of ATNs?
for instance, can I use someone's 223 caliber cam on my 6-18x65 (which came with a 22-250 cam instead)
any help is much appreciated!