Is this reamer still around? What a great connection.
(I understand that BobinNH has passed)
Back to this. We have a reamer that puts a 160 AB touching at 3.605 which works awesome for M70’s. Bob also has a Henricksen reamer that I’m not sure if the specs but could probably find for you. The best option is to get Kevin Weaver to use his reamer and throat it to the longest nosed bullet you wanna use.
I used a 175 ELD to touch at 3.575 so I can use the ELD types in the magazine and 175 PTs and similar will seat a bit shorter but still not be deep enough in the case to cause compression issues.