Powder has been a bit hard to come by around here and found some HS-6 and 800-X at a LGS. I wondered which would be better for loading .45 230gr and 9mm 124gr, both plated RN. Just for range plinking.
Back in the 1970's I loaded 9mm with 800-x and it did not
produce maximum speeds in my old Radom.
It did a much better job with the 38 and 357 Magnum, however