JimGun
Member
I have a ruger Blackhawk .45 with cylinders for .45 ACP and .45 Colt.
I assumed that the .45 Colt would produce more kenetic energy, but when I look at the figures in my reloading manual it gives a different picture.
Using a formula for Kinetic Energy found in my Speer Reloading Manual , that is:
KE in foot pounds = (Velocity in FPS(squared) /450400 ) * bullet weight)
I get the following results:
.45 ACP 230 gr. L-RN 5.6 grs Win. 231 mzl. Vel. 837 KE= 352.6399 foot pounds
.45 Colt 250 gr. HP-XTP 6.1 grs Win. 231 mzl. Vel. 600 KE=199.8224 foot pounds.
Can someone please explain the advantage of using .45 Colt over .45 ACP?
I assumed that the .45 Colt would produce more kenetic energy, but when I look at the figures in my reloading manual it gives a different picture.
Using a formula for Kinetic Energy found in my Speer Reloading Manual , that is:
KE in foot pounds = (Velocity in FPS(squared) /450400 ) * bullet weight)
I get the following results:
.45 ACP 230 gr. L-RN 5.6 grs Win. 231 mzl. Vel. 837 KE= 352.6399 foot pounds
.45 Colt 250 gr. HP-XTP 6.1 grs Win. 231 mzl. Vel. 600 KE=199.8224 foot pounds.
Can someone please explain the advantage of using .45 Colt over .45 ACP?