Been loading Magtech for long time.
Make 577-450 and 577 Snider out of 24 gauge and Dutch Beaumont out of 32 gauge brass.
Also American Arms O/Us in 24 and 32 gauge and reload both brass and plastic for them.
No issues so far, you do have to have wads that fit tightly in the brass hulls or use a tight nitro card under the wad.
For the brass hulls, I do not crimp but use Elmer's School Glue to hold the overshot wad.
Mike
p.s. wish Magtech made a 10 gauge brass hull, but now use the old Alcan all brass hulls and they are wonderful
