I have been using 38 special cartridges in my 357 magnum revolver for practice, but have been unhappy with the carbon ring that must be removed on each chamber every time I clean the gun. The problem is that the 38 special cartridges are shorter than the 357 cartridges and when fired the end of the chamber becomes the beginning of the barrel. A possible solution is to only use 357 cartridges.
The question is: is it ok to load 357 mag cartridges to 38 special or 38 special +p power levels?
Bullet: 125 gn JHP
Min Charge: 4.3 gr Velocity: 826 fps Pressure: 13300 PSI
Max Charge: 4.9 gr Velocity:934 fps Pressure:16300 psi
Max Charge: 5.3 gr Velocity:1018 fps Pressure:19800 psi
Min Charge: 7.3 gr Velocity: 1335 fps Pressure: 33800 PSI
Max Charge: 8.8gr Velocity:1514 fps Pressure:42700 psi
I would propose loading my 357 cartridges with 5.9 gr of powder (38 spec+P charge plus 10% to account for the cartridge case size difference) and expect to have a power level equivalent to the 38 Special +P load.
Will this work and is this a good plan?
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