Waywatcher
Member
I ran into a strange situation looking at my load data the other day and I am looking for any guidance or experience you might have.
I am loading Hornady 180 grain XTP into .357 Magnum, using Accurate No. 9 Powder. I haven't loaded any yet because of the following:
My Hornady 7th edition reloading book says: 9.3 start 10.5 max
My Accurate Powder reloading data says: 10.8 start 12.0 max
Both sets of data use WSPM primers, A No. 9 Powder, and Hornady 180 XTP bullets specifically.
(The Accurate data has the oal 1.585, Hornady at 1.590)
I called both companies today, I told them both the situation and Accurate said they stand behind their load data but I could start lower and that would be ok. Hornady said I shouldn't exceed their data, and I should work up the load.
I will be loading these for a GP100 if it matters.
Where to start? Trust the powder company or trust the bullet manufacturer?
I am loading Hornady 180 grain XTP into .357 Magnum, using Accurate No. 9 Powder. I haven't loaded any yet because of the following:
My Hornady 7th edition reloading book says: 9.3 start 10.5 max
My Accurate Powder reloading data says: 10.8 start 12.0 max
Both sets of data use WSPM primers, A No. 9 Powder, and Hornady 180 XTP bullets specifically.
(The Accurate data has the oal 1.585, Hornady at 1.590)
I called both companies today, I told them both the situation and Accurate said they stand behind their load data but I could start lower and that would be ok. Hornady said I shouldn't exceed their data, and I should work up the load.
I will be loading these for a GP100 if it matters.
Where to start? Trust the powder company or trust the bullet manufacturer?