Kuduae-

Thanks for adding to this thread. My main rifle barrel is a 7x57R, and interestingly enough the GEE for the Hornet round and a 140 gr. 7x57R is very similar.

You are correct, a 150 yd shot will probably be the max I'd shoot something with the Hornet insert. I am incredibly impressed with the einstecklauf. It is a "Princess" brand, and routinely puts 5 rounds into less than an inch @ 100 yds, and the return to zero is impeccable.

I have a pre-war S&K 22 LR einstecklauf that I want to fit to my drilling as well for hunting squirrels, hence my question about the 22 LR.