Heighth measurement of Ruger Rings

farfromnormal

Hi, I hope someone can help me. A customer brought in an older ring for a Ruger rifle that is not marked with a number. The heighth of the ring is .435, does this match the current #3 or #4 ring.
Thanks in advance.

Ambrose

#4. As you probably know, Ruger only recently put numbers on their rings. On a model 77, the #4 is the rear ring for a low scope set-up and the front ring for medium. #3 is the other ring for low and #5 is the other ring for med.

farfromnormal

Thanks, Ambrose. That is what I thought but wanted to be sure.

farfromnormal

I got an answer from Ruger. So, for anyone interested:
LOW (3)=.312
MEDIUM (4)=.435
HIGH (5)=.565
X-HIGH (6)=.680