What weight increment for powder adjustments
Posted: Thu Sep 22, 2022 12:28 pm
In my initial reloads I used 0.5 grains as my charge weight index of change. If I wish to fine tune my loadings is dropping to 0.3 or 0.2 grains worth while or not for this powder, charge weight and caliber? I likely will use only bullets in the 245-250 grain weight class for now.
I ask because I achieved IMO excellent accuracy between 38.5 and 39.5 grains of Hodgdon Lil'Gun and would like to try to fine tune my powder charge weights and when doing so for my bottle necked rifle cartridges with much slower burning rifle powders I usually used a 0.30 grain increment or even a 0.20 grain increment. But am wondering with using a powder with a much faster burn rate what weight of powder charge should I use for fine tuning. For example Lil'Gun is number 62 and my IMR 4831 for my 300WSM is at number 124 on the powder burn rate charts so obviously Lil'Gun burns much faster than IMR4831.
I ask because I achieved IMO excellent accuracy between 38.5 and 39.5 grains of Hodgdon Lil'Gun and would like to try to fine tune my powder charge weights and when doing so for my bottle necked rifle cartridges with much slower burning rifle powders I usually used a 0.30 grain increment or even a 0.20 grain increment. But am wondering with using a powder with a much faster burn rate what weight of powder charge should I use for fine tuning. For example Lil'Gun is number 62 and my IMR 4831 for my 300WSM is at number 124 on the powder burn rate charts so obviously Lil'Gun burns much faster than IMR4831.