I shoot 38 special in both my Marlin 357's with no obvious accuracy loss. one is a microgroove and the other is ballard rifled. I like you have been waiting for the 327 rifle for a long time and have one on order. I hope it likes the 32H&R as I have a lot of that brass, but if not I can load my 327 brass to a lower pressure and do the same thing.
