The neat thing about this method is you can take the down range velocities all the way out to your longest range and compare them with the down range velocities of other rounds, calibers and see the changes compared to each other. The 45 long Colt at 100 yards has slowed to 1600 FPS and the killing level has dropped to almost KS of 63 from 79. Where the 30-30 load has dropped to 1930FPS to a KS 46 from 53.4.....that should make a few yell ‘foul...can’t be’, but it is! And from my use of these 45 loads in the field for years on large game....I can tell you it is.....! As many gunwriters have stated over the years, a 44 mag or heavy loaded 45 long Colt fired from a rifle is more powerful than a 30-30 at 100 yards....actually they are more powerful than the great 30-30, at a lot further than 100 yards.....
Pushing a 335 grain cast WFN at 1800 fps is around top end for a 1892 action for me. That puts the KS at almost 86! So this gives a good picture of what a so called lowly 45 long Colt can really do. What a lion killer that 335 grain 45 long Colt load would be. The Win 94s and Marlins in 45 long Colt can push a 330 to 340 grain cast bullet to 1600 FPS and a KS of 76 and that’s no sleaze...because 40+ caliber bullets of this weight will penetrate incredible distances thru animals, with great disruptive force to tissue and bone. Except for upper bullet weight limit, because of bullet length and the less powder room in the 44 mag case and the 45 case....I see little difference in both up to 300+ grains. As long as shape, material of the bullet construction, and the velocity are the same. The slight differences in B.C. (Bullet Coefficient) make little down range differences between the two. Going to bullet weights of 325+grains and higher, begin the power level changes in favor of the 45 over the 44 mag...but as said is that potential power really needed in normal hunting in the lower states...Alaska yes, Africa fine...and it’s nice to have the potential if needed.