Received the Burris XTR Picatinny 2 piece bases. My goal was to get my 50mm objective bell on my Leupold as close to barrel as possible........I succeeded.
This is the clearance you get with the Burris XTR 2 piece bases and Seekins low rings (.82) and the Leupold 50mm bell. Now this is with the Criterion heavy sporter barrel, I do not know for sure but if you used the light varmint contour or bigger barrels ya may wanna go with the Seekins .92 or .97 height rings.
XTR bases are well made, fit the receiver very well and have enough slots to make minor mounting adjustments.