Trajectory calculators?

[Zeede]

Hey folks, I have a pair of questions:

1) I have a M1 Garand I want to sight in at 25 yards, but be zeroed at 100 yards. I've been told everything from 1.5" low to .25" high. And just to make sure I have the process correct, I put the target at 25 yards, aim at the bullseye and actually want the holes to be off of center.

2) Is there a website to calculate stuff like this? Hornady has a ballstics website but the rifles are almost all zeroed at 100 yards, and they do not show 25 yard data.

Thanks for your help!

Cameron

 

[Bwana John]

I put the target at 25 yards, aim at the bullseye and actually want the holes to be off of center.

The POI should be 1/4" below the POA for a 100 yard zero on a M-1 Garand with the rear sight dial set on the 100 yard dashmark on the adjustment dial (the one that is under the 200 marking).
But this will not work if the M-1 Garand is not zeroed at 200 yards first and the rear sight dial calibrated to that zero.