kilotanker22
New member
Been working on this load for awhile now. Getting the powder charge right proved difficult until I changed primers. Switched from Winchester large rifle magnum to CCI #34 and cut my ES and SD numbers in half. Also dropped one full grain of powder and kept the same velocity.
Don't mind the flier there that was all me. I shoot 5 shot groups and allow to cool. This gun gets too hot to shoot ten shot strings. I shot three strings today from this rifle, and they all fall within the same velocity range. As such I will only post one image of the spreadsheet here.
I used the Hornady Eleventh Edition manual for data. This load is below their listed maximum charge with this bullet. I am using Hornady brass, Hodgdon Retumbo, and CCI 250 primers. CCI #34 shoot the same as the 250.
Don't mind the flier there that was all me. I shoot 5 shot groups and allow to cool. This gun gets too hot to shoot ten shot strings. I shot three strings today from this rifle, and they all fall within the same velocity range. As such I will only post one image of the spreadsheet here.
I used the Hornady Eleventh Edition manual for data. This load is below their listed maximum charge with this bullet. I am using Hornady brass, Hodgdon Retumbo, and CCI 250 primers. CCI #34 shoot the same as the 250.
