Quote:

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The formula used in the Skinner Front sight calculator can used for various ranges and is depicted as follows in the Lyman Reloader Manual (Appendix B):

M= (D/R) x S

M= Movement in inches needed to correctly zero your sights

D= impact deviation in inches (how far off from the aim point to the point that the bullet is hitting)
R = range in inches
S= sight radius (distance between sights)

Example: firearm is hitting 6 " low at 50 yards

D= 6" R= 50 x36 =1800 inches (for 100yds it would be 100x36 = 3600")
S=20"

M=6/1800 x 20 = .067"

0.67 " of sight adjustment is needed to zero the firearm.

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I know that is just a hypothetical examle, but two-thirds of an inch wuld be a sizable adjustment to an iron sight! Then realised there is a decimal point error in the comment, it is 0.067 inches, higher. Very workable.

I wonder how Mick's adjustment would far with his numbers and a similar sight distance?

12"/(100m x 1.1 x 36")x say 20" = 0.0606" lower.


Very nice looking rifle. Which no doubt will get lots of work in the bush with you. Congratulations.

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John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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