I'd do more shooting.
A single group with each powder charge isn't very definitive. I wouldn't pick any of them as "better" with a single example of each.
To make an informed decision, you must at least make some kind of attempt at statistical validity.
Five, three shot groups would be a minimum IMO.
If this is a prairie dog rifle, I'd shoot three five shot groups, minimum. 15 of each load.
A single group with each powder charge isn't very definitive. I wouldn't pick any of them as "better" with a single example of each.
To make an informed decision, you must at least make some kind of attempt at statistical validity.
Five, three shot groups would be a minimum IMO.
If this is a prairie dog rifle, I'd shoot three five shot groups, minimum. 15 of each load.
