You folks who has reloaded for this, did you do like 80.0, 80.5, 81.0, 81.5, etc.? Have reloaded 50BMG and would do 1 full grain increments but not quite sure on this. I did a batch yesterday after going through the new hornady manual, going online and seeing what others were doing with retumbo. I don't like to waste powder but don't like to push my luck either. Max load in hornady book is 93.0 gr of retumbo. I did 90.0, 90.5, 91.0, 91.5, 92.0. Am thinking of adding 89.0 and 89.5. Rifle is a Savage 110 338 LM FCP. Hornady book shows there test rifle was a 27 inch barrel with 1:10 twist. This rifle is a 26 inch barrel and 1:9 twist. Appreciate any suggestions. Thanks