7.5 Swiss Ballistics

[countertop]

Anyone have a good chart of 7.5 Swiss GP11 ballistics?

If I am zeroing in my K31 on a 50 yard range, how high (or low) should it be in order to get a 100 yard zero? a 200 yard zero?

 

[GTSteve03]

Just use a standard .308/7.62 NATO ballistics table. The rounds are supposed to perform very similarly so I imagine that should work just as well.

 

[longhorngunman]

I'm wondering about this myself. While I know it is similar to .308 there have to be some variations since the GP11 uses 174gr bullets.

 

[Ad Astra]

It IS a good question... the gradations on the rear sight should work, as Ruag GP-11 is the ammo it's meant to use... theoretically.

 

[ocabj]

Easiest way to do it would be to chronograph GP11 in your K31 and run the data against JBM: http://www.eskimo.com/~jbm/calculations/traj/traj.html

I actually never chronographed GP11, myself. I would do it this Sunday while I'm load testing for one of my rifles, but I don't have any GP11 on hand (only handloaded 7.5x55 for me).