[rclark]

Just use .32 H&R Magnum data for your .327 cartridges and enjoy . No problem. Just like any other cartridge... like we do with .44 Magnum (Use .44 Special data) and .357 Magnum (use .38 special data). And no filler necessary. Test until you find a good combination over the chronograph and on target .

Take for example the AA#5 load shown in table above for the 100gr bullet. Starting load there is 6.8gr . But looking at same bullet for .32 H&R magnum the starting load is 3.1gr . So now you have a range of 3.1gr to 8.0gr range under that same bullet. If it was me, I'd start at say 3.5gr and work up to the velocity/accuracy you want from that bullet in the .327 cartridge. Hope that helps.

 

[rclark]

Concur with above primer statements. I rarely use magnum primers for any powders except those that get better results over the chronograph. Like 4227 or HS-6. I don't use H110/W296 but my understanding is that powder likes a magnum primer. BTW, it normally never 'hurts' to use a magnum primer either when that is what you got to work with. I did some back-to-back testing with some of the powders I use for my own piece of mind....