Why don't someone make a air rifle that shoots a traditional full lead bullet. Ik the big bores do this but why not a 22 cal or any of the smaller calibers. It seems that almost all small caliber pcp and springer manufactures make the these guns to shoot the Diablo shaped projectiles. I'm curious as to why they don't put a berral with a high twist ratio on a pcp and shoot full lead projectiles. Is there not enough speed with what we do?