I've never used it, but I do use 700-X in .45acp. If you consult the IMR burn rate chart, you'll find that 700-X is listed at #6 between Hodgdon Clays at #5, and Allient's Bullseye at #7.
800-X is listed at #27 between Vihtavuori N340 at #26, and IMR's SR4756 at #28, this puts it in the same company as Herco, WSF, AA #5, and HS-6 which I would concider to be more appropriate for .357 Magnum.
IMR does list 800-X in their loading data, so it should be a safe powder for your application....
230 GR. REM MC
DIA: .451"
COL: 1.260"
HiSkor 700-X 5.0 770
17,700 CUP
PB 5.5 750
17,900 CUP
SR 7625 6.0 745
17,400 CUP
HiSkor 800-X 7.3 840
17,800 CUP
SR 4756 7.4 795
17,600 CUP
This is cut & pasted right from IMR's website.....
800-X is listed at #27 between Vihtavuori N340 at #26, and IMR's SR4756 at #28, this puts it in the same company as Herco, WSF, AA #5, and HS-6 which I would concider to be more appropriate for .357 Magnum.
IMR does list 800-X in their loading data, so it should be a safe powder for your application....
230 GR. REM MC
DIA: .451"
COL: 1.260"
HiSkor 700-X 5.0 770
17,700 CUP
PB 5.5 750
17,900 CUP
SR 7625 6.0 745
17,400 CUP
HiSkor 800-X 7.3 840
17,800 CUP
SR 4756 7.4 795
17,600 CUP
This is cut & pasted right from IMR's website.....
