Jimbo357mag
Hawkeye
The Speer 180gr 35 cal bullet has a crimp groove so I load to the crimp groove. I saw load data in some magazine that used the same charge of H-110 for the 35cal bullet as for the 180gr XTP bullet. That seemed a little light when crimped to the first groove (longer COL) so I went with a little more powder for both the 180gr XTP and the Speer 35 cal.
With Accurate #9 the max is 12.0gr for the 180gr XTP. So I add 1.0gr more powder and shoot 13.0 or 13.5gr when crimped to the first groove (longer COL) or with the 35cal bullet. Both seem to work well with the nod to the 13.5gr.
With H-110 the max for a 180gr XTP is 13.5gr. So for the first groove (longer COL) with the XTP or with the 35cal bullet I use 14.5gr or 15.0gr. I haven't shot this enough to give a good performance review.
When seating the XTP long or the 35cal bullet there is considerably more case volume. That is why the powder charge can be increased over Max book charge. Normally I would never suggest that but I have all indications that a 1.0gr increase is safe. 8) 8)
...Jimbo
With Accurate #9 the max is 12.0gr for the 180gr XTP. So I add 1.0gr more powder and shoot 13.0 or 13.5gr when crimped to the first groove (longer COL) or with the 35cal bullet. Both seem to work well with the nod to the 13.5gr.
With H-110 the max for a 180gr XTP is 13.5gr. So for the first groove (longer COL) with the XTP or with the 35cal bullet I use 14.5gr or 15.0gr. I haven't shot this enough to give a good performance review.
When seating the XTP long or the 35cal bullet there is considerably more case volume. That is why the powder charge can be increased over Max book charge. Normally I would never suggest that but I have all indications that a 1.0gr increase is safe. 8) 8)
...Jimbo