Or, just use this chart from from Lyman. The columns designate the sight radius. These measurements are for movement of one inch at 100 yards. Double the figure for 50 yards; quadruple for 25 yards, etc.Good group. Rather then trial and error filing you can easily use math to get it right the first time. Use any calipers to measure the front sight to include the stock with out the ram rod. Then plug in the numbers to this formula. Then file to the amount required.
D2=R2 (D1/R1)
D1 is impact error
D2 is amount of change needed
R1 is inches to target
R2 is sight radius in inches
example, .060”= 9” (6” / 900”)
D1 6” low
R1 900” (25yards)
R2 9” (pistol)
D2 .060”
This works for windage as well.
That sure is a lot simply, thanks for your advice friendSimply change your sight picture. Put the rear sight lower/ bring front sight up. Or slightly increase powder charge.
I believe this is my best optionExcellent group. My Tennessee rifle was shooting a bit low as well. I didn't want to file too much off the front sight. Took maybe a 1/16 th inch off. I tried to aim by holding the top of the front sight to the top of the notch of the rear sight. That brought my POI right into the bullseye.
60 grains of 3g Goex, .015 moisten patch, .498 ballWhat was your charge?
That is the charge my Lyman great Plains likes too60 grains of 3g Goex, .015 moisten patch, .498 ball
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