Is there a throat/backbore difference specifically between large shank v small shank 10M?

Thanks,

Hammond contact not functioning at the moment

From the Hammond site:

"M

Medium-depth cup with a V shape. This is an extremely efficient cup with the capability of duel use between section work or possibly lead on small bore, or solo work on large bore. .257 throat/T2 backbore(small bore), .265 throat /T5 backbore(large)"

This goes for all M cups. Thus, we can deduce that a 10M small shank has the .257" throat and T2 (compact) backbore, while the large has the .265" throat and T5 (most open) backbore.

Thank you !! Of course it was in front of me...