Search:

These rifles are relatively inexpensive compared to other US made rifles of the same vintage mostly because ammo is unavailable. I have no idea whether converting to 38 Super would work, but...

What I meant to say is that a larger bullet like 357 can be swaged down to 351 or 352 using one of these dies

Lee sells custom bullet sizing dies. You can order one in 351 or 352. That's what I did. It can be used for either cast or jacketed bullets.