New to reloading, have stuffed some 115 grain 9mm, now want to do some 124 grain. They are Berry's plated copper RN and X-treme 124 gr HP, also copper plated. Was going to try Unique on these, but have HP-38 as well.
Looking at several recipes I started with the one on Alliant's page. It calls for 5.8 grains with a 124 gr Spear GDHP bullet and 1.12 OAL.
Also looked at the one in Lee's book calling for a range 4.5 to 5.0, but at 1.075 OAL.
I understand that since Alliant only showed one powder charge amount, it should be considered maximum, and one should probably start at 10% less or so, but.......5.8 when Lee's info shows 5.0 as max seems odd. (using a 124 grain JHP) Is it the difference in the OAL that makes the difference? The Lee recipe, while less grains has a shorter OAL, whereas the Alliant info uses a larger amount but has longer OAL?
Has anyone tried 9MM with 5.8 gr Unique out there?
Thanks for any and all info,
Russellc
Looking at several recipes I started with the one on Alliant's page. It calls for 5.8 grains with a 124 gr Spear GDHP bullet and 1.12 OAL.
Also looked at the one in Lee's book calling for a range 4.5 to 5.0, but at 1.075 OAL.
I understand that since Alliant only showed one powder charge amount, it should be considered maximum, and one should probably start at 10% less or so, but.......5.8 when Lee's info shows 5.0 as max seems odd. (using a 124 grain JHP) Is it the difference in the OAL that makes the difference? The Lee recipe, while less grains has a shorter OAL, whereas the Alliant info uses a larger amount but has longer OAL?
Has anyone tried 9MM with 5.8 gr Unique out there?
Thanks for any and all info,
Russellc