I vote for the 45 Colt! Here's a few loads that shoot really well in my Ruger Bisley!

Bullet: Matt's Bullets Lyman #452490 (245 grs/Hornady Gas Check)
Powder: Hodgdon HS-6 11.4 grs.
Primer: CCI-350
Case: PMC 45 Colt
Avg Vel: 1081 fps
ES: 53
SD: 13

These are definitely Ruger only!

Bullet: Montana Bullet Casting 250 gr. WFNGC (260 grs./.453)
Powder: Hodgdon H-110 24.4 grs.
Primer: CCI-350
Case: PMC & Federal
Velocity: 1450.80 fps.
ES: 69.67
SD: 23.91

Bullet: Hornady 250 gr. XTP-HP
Powder: Winchester 296 25.5 grs.
Primer: Winchester Large Pistol
Case: Winchester 45 Colt
OAL: 1.600
Avg Vel: 1298 fps
ES: 46
SD: 15

[Linked Image from i.postimg.cc]

Last edited by pbcaster45; 03/30/23. Reason: more info