[img width=600 height=450]http://i1178.photobucket.com/albums/x374/robert402/006.jpg[/img]

This is formed from 22 hornet on left neck to 20cal then to 17 fireform 9grs 4227 gets me 2950 with old 20gr rem bullets. I shoot this on a contender 20inch barrel that a local gun smith made for me it does what you wanted faster than HMR and cheaper to shoot. The 17 fireball
had not yet come out when I had this built. Its a fun gun to shoot but its a lot of work making cases. The 17 fireball would be my choice today but I have this one now so I'll keep shooting it till I run out of good brass. might be a while though have over 600 cases made up. 4198 will take it up to 3500 if I need to go there.