Here are a few velocities in fps that I get with some of my different 454 Casull loads in my s/s 20" barreled LSI Puma M92.
240gr XTP-Mag 38grs H110 1) 2258 2) 2327 3) 2316
300gr XTP-Mag 30grs H110 1) 1858 2) 1821
300gr Speer Gold Dot 31grs H110 1) 1890 2) 1897
360gr C/P WLNGC’s 27grs Lil-gun 1) 1848 2) 1846 3) 1828
395gr C/P WLNGC’s 24grs Lil-Gun 1) 1647 2) 1642 3) 1650
I went to Beartooth bullets site and used their ballistics calculator.
Here are the results for the Puma rifle.
240gr = 2820 ft-lbs 36 TKO 154 TSP
300gr = 2305 ft-lbs 36 TKO 156 TSP
360gr = 2737 ft-lbs 43 TKO 185 TSP
395gr = 2388 ft-lbs 42 TKO 182 TSP
Foot-Pounds of energy (ft-lbs) eg; 30-06 180gr bullet 2700fps = 2914
Taylor Knock Out Scale (TKO) eg; 30-06 180gr bullet 2700fps = 21
Thornly Stopping Power Scale eg; 30-06 180gr 2700fps = 109
Example of TSP scale
45 Antelope
50 Deer
100 Black Bear (To account for 350- 500 lbs. bear.)
120 Elk, Moose, Kudu, Zebra, Large African Safari Plains Game
150 Lion, Leopard, Grizzly Bear, Brown Bear
250 Hippopotamus , Rhinoceros, Cape Buffalo, Elephant