That's why I own pairs of guns,,,
I have five pairs of pistols that are identical except for caliber,,,
Yes, it allows me to practice lots and not spend a fortune.
For instance:
I'll go out with my Model 36 snubbie in .38 and it's twin Model 34 in .22 LR,,,
So I shoot a box of .22 LR and then a cylinder or two of .38,,,
Lather - Rinse - Repeat
In any event I get to send several hundred rounds downrange,,,
And it only costs me about $25-30 bucks.
Heck yes I shoot a lot of .22 because it's cheaper.
Aarond