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.22LR Slope Dope?

Josh Smith

Mosin Fan
Full Member
Minuteman
Oct 27, 2009
189
7
Wabash IN
smith-sights.com
Hello,

I missed two squirrels with seven shots. Given that I'd been getting nothing but head shots until I started shooting at more extreme angles out to 75 to 100 yards, I can pretty much narrow it down to a misunderstanding of slope dope.

I can find formulas for high powered rifle cartridges, but nothing for the .22LR 40gn.

Can someone direct me to a chart? I have background in higher math, and just need to see how the chart and math relate to each other before applying it.

Thanks!

Josh
 
Re: .22LR Slope Dope?

cosine of angle of slope x your dope

Doesn't matter what you are shooting. Must be some extreme angles to be making a real difference at those ranges even with a .22 or something else is responsible for the misses.


 
Re: .22LR Slope Dope?

exactly.

Doesn't matter if it's a .338LR or a BB gun. It's all about how gravity works and the geometry of the problem.

That's why cosine charts don't need to have a caliber listed.

NOW a flat shooting caliber will not have as great of a need for an angle correction as a steep dropping caliber, but they will both be affected the same.
 
Re: .22LR Slope Dope?

Thanks folks.

Looks like I have the cosine chart in my sniper's manual.

I didn't think it would make much difference on the .22lr, but I'm working out one factor at a time.

Time to concentrate on me. I am simply not used to shooting from a sitting position at a steep angle.

Thanks again!

Josh
 
Re: .22LR Slope Dope?

could be the fact that you are shooting at a squirrel at 75-100 yards too might have something to do with the misses. add and extreme angle to it, and i wish you luck!

cosinechart.jpg