help with accuracy window.
- Thread starter Caleb85
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I would revisit 78 to 79.6 and try it .3 gr. increments.
Caleb85
Well-Known Member
All one shot increments ? Or do I start 3 shot groups? I'm new to this kind of testing if you can't tell.
Looks like your last target was a ladder test from 300 yards.
So, I was thinking about another ladder test using one each of the following loads to see if something more definite shows up in the results.
78
78.3
78.6
78.9
79.2
79.5
Hopefully a couple of these loads will group together vertically at 300 yards and give you a good starting point to create loads for 3 shot groups to fine tune things.
So, I was thinking about another ladder test using one each of the following loads to see if something more definite shows up in the results.
78
78.3
78.6
78.9
79.2
79.5
Hopefully a couple of these loads will group together vertically at 300 yards and give you a good starting point to create loads for 3 shot groups to fine tune things.
Caleb85
Well-Known Member
Thank you!
I read an article about one guys way to do a ladder test. Of course I think he was shooting 600 or 1000 yards
Make up your loads. one or two or three rounds each. then color the bullet with a sharpy. each load a different color. Turn you target around backwards or use a large sheet of white paper. put you an aiming point on the paper and shoot them all. Then you can check out your target and tell which loads are grouping closest together
He even said if you load 3 then start with the lowest charge and shoot one of each load. then next start with the highest charge and shoot one of each. That balances out when loads are shot with barrel heating. Guess you know to wait a while and let things cool down between groups.
All good points.
1) A 300 Yard ladder test will work ok. I shoot mine at that distance anyway.
2) The color markers work very well. Just do not color the bearing surface. Color up to the ojive.
3) If the rifle is shooting good. You can usually fire only one round for given charge. But it is a good idea not to shoot them in sequence. I have used the "shoot low charge, then shoot the high charge" kind of round robin method.
4) Another good point would be not to start with a clean barrel. I would NOT clean the rifle before the next trip to the range. Because the first few shots will probably string vertical anyway with a clean barrel. So make sure the barrel is cool, dirty, and grouping reasonably before starting the ladder test.
