60 per drum for the ca15. 50 per drum for the ca10. I do a lot of prone shooting so the lower profile works out a lot better.
I have a dual cylinder 6500 psi compressor for mine. 4500 psi for the staffs of death and 3000 for my scuba tanks. Those pre charged air guns are nasty. My .25...
I got a lot but here’s the 4 I use the most.
1. Ca15 play gun
2. Hs 6.5 creed comp gun
3 fx wildcat .25 cal. When things need to be shot but no one needs to hear about it.
4. Ca10. The money maker.