Perfect match. These rings are made specifically to fit the Winchester steel bases. The two screw system using Torx screws allows very secure mounting of the scope and at the same time a very tight attachment to the steel bases. These steel scope rings are specifically for use with Winchester steel bases. The reason to go to this extreme and cost is purely precision. When you have upwards of $1,000 invested in quality glass and you want top accuracy from your Model 70 rifle, getting the best, most carefully made, precision rings simply makes sense.
