A question for experienced reloaders.
I'm wondering, and you may know, if the recoil would be the same in 38 and 357 if the same powder and projo were used with slightly different weights of powder in the case. I plan to reload +P for my wife's 38 SP101. I have a GP100 and SP101 in 357. I know the ring inside the cylinder can be cleaned but i don't want a foul up and let my wife practice with a load that is beyond her comfort and safety. Therefore i would like to use the 357 case for my practice and competition rounds to avoid this problem. Would the case length make a difference, or would/could the powder variation balance out the recoil factor?