Offhand accuracy at 100 yards

[LR1955]

A good question would be what is acceptable offhand accuracy for your purpose. I assume since you mentioned ladder stands you are talking hunting accuracy?
So generally 6" vital zone is used for deer, so you would want to be able to hit those pie plates (usually 8") 100% of the time.
So how to get there?, short answer would be put a rail on your stand for a more stable rest.

Wanting to improve your off hand accuracy takes practice, use a .22lr at 50 yards and try the techniques mentioned, can get a lot of practice in to hone the technique, then take a few shots at 100 with your grendel you should see improvement.

BCH:

And that is the best advice I have seen for this particular situation in a long time.

I shot Over the Course for years with both service and match rifle where we shoot standing at 200 yards for our first stage of a match. Currently, I compete in Biathlon where we shoot prone and standing at 50 meters after some pretty tough skiing.

My take on it is this. Unless a guy really wants to become a competent off hand shooter, his best bet is to just get a rest and figure out how to make it work in his situation.

Or, given shots on a game animal at 100 yards or less, ditch the optic and use a dot sight. Will be way easier to get better performance standing using a dot sight or even irons than with anything magnified.

LR55