I'm in the process of working up a load for Campro 9mm 115gr copper plated bullets using HP-38 / W 231 powder with CCI SPP and starline brass and I'm trying to sort out what to use as the starting load
On the Campro website, they list a starting load of 4.7gr and a top load of 5.1 gr for that specific bullet. They also say to use FMJ data for their copper plated bullets.
In the Lee manual they show a range of 4.7 to 5.1 for the 115gr XTPs which seem to take similar loads to 115gr FMJ in all powders
In the Hornady manual they show a range of 4.1 to 4.7 (max) for 115gr FMJ and XTP for w 231
Hodgdon shows 4.7 to 5.1 for 115 gr GDHPs
So the only oddball is the Hornady manual, which shows a MAX load equal to the STARTING load that everyone else shows!
I'm thinking of ignoring the Hornady data and starting at 4.3 gr and then going up in 0.1gr increments to 5gr (5 rds of each) for the first batch of test loads, then keeping an eye for any pressure signs as I test them for grouping.
Should I keep it below 4.7 instead?
On the Campro website, they list a starting load of 4.7gr and a top load of 5.1 gr for that specific bullet. They also say to use FMJ data for their copper plated bullets.
In the Lee manual they show a range of 4.7 to 5.1 for the 115gr XTPs which seem to take similar loads to 115gr FMJ in all powders
In the Hornady manual they show a range of 4.1 to 4.7 (max) for 115gr FMJ and XTP for w 231
Hodgdon shows 4.7 to 5.1 for 115 gr GDHPs
So the only oddball is the Hornady manual, which shows a MAX load equal to the STARTING load that everyone else shows!
I'm thinking of ignoring the Hornady data and starting at 4.3 gr and then going up in 0.1gr increments to 5gr (5 rds of each) for the first batch of test loads, then keeping an eye for any pressure signs as I test them for grouping.
Should I keep it below 4.7 instead?
