Windage globe sight

[bruce moulds]

kevin,
don makes a good point.
windage foresights are just another thing to go wrong, and we all know and understand murphy's law.
however this issue is a 2 edged sword.
firstly the issue of spindrift can be dealt with using a windage sight.
a typical 45 cal has about 2 moa spindrift at 1000 yds, to the right in in a r.h. twist.
the best way to establish a dead wind zero is at 25 or 50 yds where wind deflection is minimal.
this will be good for 100.
when shooting at 1000, you simply put 2 moa left on the foresight.
only shooting out to 500 this might not be such an issue, as it is only 1 moa there.
however, at 1000, 2 moa is 1/3 the way from centre to the edge of the target, and a slightly less than perfect wind call could cause a miss.
a rear sight that has 40 moa each side can be a problem at long range.
if you need 40 moa left wind, your sight will be 0.4" off centre to the left.
with the sight at its 1000 setting, this can leave very little face contact with the stock, even with a strap on cheek piece.
if you can put 30 on the front this problem goes away.
if the wind changes drastically, a front adjustment will be required, particularly if it goes across centre.
this is where having the marks on the back of the sight would be an advantage, but usually there is a spirit level in the way, an absolute necessity for long range.
whatever sight you get, make sure distant thunder can supply inserts for it.
I require inserts from 3.0 mm to 4.2 mm in 0.2 increments for our Australian fullbore targets and sil, with a reasonably thick annulus.
his inserts have been invaluable.
I also use a Baldwin sight for the way it turns, as I also shoot fclass with a scope.
having 2 different direction sights can drive you mental
knowing what is on the sight is vitally important, and this is virtually impossible when you are trying to remember which way to turn the dial.
keep safe,
bruce.