If your only use will be suppressed, go 45 colt. It's a more appropriate case size for suppressed, you can fit more rounds in the mag, and you can still increase the bullet weight in the 45 colt to try and make up for velocity. also, you will use less powder with the 45 colt.
Now, you could get a custom made 45-70 barrel with faster twist and try to run some 700gr bullets subsonic in it. The ultraheavy 45 cal bullets would help fill up the case for the lack of powder being used to bring it down to subsonic.
Last edited by Gohip2000; 01/13/24.
