Well, cheaped out and went with Weaver 46 and 47 bases and 2.5-8 just fit. Rings just inside the front and rear bells. Never had a problem with Weaver so am a happy camper. Eye relief is good as is the low height rings for a clear view... Now if WWS had 3006 brass and some Nosler 165 gr bullets I'd be set. Unfortunately they are out of 3006 brass, WTF, and any Noslers in 165 gr 30 cal.. Geeeeeez