so as i reload for my 308 iam currious how much of a step up i should go... example lets say i try 40.9 grain and lets say they shoot fairly well but i wanna go up or down for that matter how much of a jump should i go ? 41.0 41.1 or .2 or should i step up in .5 incroments ? 41.5 42.0 42.5 ect ect
stepping up your loads ???
- Thread starter black_ump
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Re: stepping up your loads ???
Hornady Tech's typically increase their loads by .3gr. They said this step is big enough to detect a change. This was for TYPICAL loads and calibers. Approach the fringes of common sense and this does not apply.
Hornady Tech's typically increase their loads by .3gr. They said this step is big enough to detect a change. This was for TYPICAL loads and calibers. Approach the fringes of common sense and this does not apply.
Re: stepping up your loads ???
There are lots of ways to skin a cat,though I prefer to start at it's asshole. 1/2gr jumps in a 308 will tell you everything there is to know.
I'm not big on wasting components and like to cut to the chase. '15 is your Huckleberry.
There are lots of ways to skin a cat,though I prefer to start at it's asshole. 1/2gr jumps in a 308 will tell you everything there is to know.
I'm not big on wasting components and like to cut to the chase. '15 is your Huckleberry.
Re: stepping up your loads ???
It depends.
When I am developing a long range load. I first need to find where pressure shows up (1 shot per charge weight). For this I can use a fairly big step of 0.5 gr (in 308) or just over 1% Charge Weight.
Once I find the pressure point, I drop back 3% and use steps of 0.4-0.5%. HEre I shoot groups of 5 shots each and use group size to narrow down the set of choices.
Once I find a charge weight that shoots acceptably, I use the finest increment I can reliably measure (0.05gr) and survey the whole window between the chosen step size to find the optimal charge weight. I shoot 5-shot groups (again) but I am looking for the CW where accuracy goes to pot (on both ends). I select the CW in the middle of the window.
This generally finds a window that is big enough to throw and go (no trickling.)
It depends.
When I am developing a long range load. I first need to find where pressure shows up (1 shot per charge weight). For this I can use a fairly big step of 0.5 gr (in 308) or just over 1% Charge Weight.
Once I find the pressure point, I drop back 3% and use steps of 0.4-0.5%. HEre I shoot groups of 5 shots each and use group size to narrow down the set of choices.
Once I find a charge weight that shoots acceptably, I use the finest increment I can reliably measure (0.05gr) and survey the whole window between the chosen step size to find the optimal charge weight. I shoot 5-shot groups (again) but I am looking for the CW where accuracy goes to pot (on both ends). I select the CW in the middle of the window.
This generally finds a window that is big enough to throw and go (no trickling.)
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