I think I've got about 8 grand slams including 2 of the 6.5-20's.
I really like them but they are a little short on eye relief especially the 6.5-20 model.
One of my 6.5-20's is on my 260 VLS and I shoot 140's without the scope biting me. I have put the 6.5-20's on larger rifles during load development and been hit by them though.
I too like the varmint reticle and the glass is good and the clicks are right on. I've haven't had a problem with any of my grandslams yet.
Bb
