I have had a straight 4x Bushnell banner on my model 70 for 25 years or so. Right size, no complaints. At the time nobody put a 1 inch tube on a 22. The mounts cost me more than the scope. Yours is older yet, I think. You can find an old Weaver "D" on e-bay from time to time. I have one with a 3/4 inch tube (4X) that would probably look good (circa 1973 or so). Make sure you get rings with the scope. You cant just go out and by 3/4 in mounts any more. Post a pic if ya can. Dont know why LEupold dosent come out with a steel tube, blued straight 4,6x. Guy would think they'd sell fast enough. CL