Dave Schwaab
Single-Sixer
- Joined
- Nov 2, 2014
- Messages
- 128
The expanding gases produced by the burning powder create the pressure that pushes the bullet down and out of the barrel, imparting the velocity to the bullet. Faster burning powders produce higher pressures quickly, while slower burning powders develop their pressure over more time. It is the PRESSURE that produces the VELOCITY, not the other way around.
A 260 gr bullet IS HEAVIER than a 230 gr bullet. I have seen "bear loads" using bullets up to 325 gr. Push all 3 bullets to the same velocity, say even 750 fps, and the heavier bullet will have the greater energy. As each bullet is pushed to faster speeds, the energy will increase faster for the heavier bullets because the velocity factor is squared in the energy equation.
We're getting away from the original question for this thread, that of what the pressure limit was for the New Model Flat Top Blackhawk with the Mid Sized Frame was. That answer would be the .45ACP +P limit (23,000psi) and NOT the .45 Colt for Ruger/Contender Only limit (25,000psi). At that pressure limit, you will still be able to get some pretty stout loads through the gun safely!
A 260 gr bullet IS HEAVIER than a 230 gr bullet. I have seen "bear loads" using bullets up to 325 gr. Push all 3 bullets to the same velocity, say even 750 fps, and the heavier bullet will have the greater energy. As each bullet is pushed to faster speeds, the energy will increase faster for the heavier bullets because the velocity factor is squared in the energy equation.
We're getting away from the original question for this thread, that of what the pressure limit was for the New Model Flat Top Blackhawk with the Mid Sized Frame was. That answer would be the .45ACP +P limit (23,000psi) and NOT the .45 Colt for Ruger/Contender Only limit (25,000psi). At that pressure limit, you will still be able to get some pretty stout loads through the gun safely!
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