That is a good point with the expansion rates. I guess it could cause a problem using an aluminum base to a steel receiver in extreme cold or hot conditions. Especially when epoxy bedded at 70 degrees then taken to hunt in -24 below.
I am leaning toward trying the titanium, but inquiring about a recoil lug or do like Ken Ferrel does on some of his and add an angled set screw for an adjustable lug.
jmden, It was quite a process deciding on n action. After all the calls, some returned some not
and the time frame for bear season..
This is what I have for the build with an extended tenion (sp).