I'm looking for a picatinny/tactical style base for an older Savage long-action receiver in 264 (it's a left-hand action). The receiver is from the late 60's and was originally chambered in 264 mag. The receiver is round up front and flat in the rear. The only ones I've seen that might work is a Warne #669 or one made by EGW. Are any of these reliable? Any other brands? Also, the rifle has a McMillan HTG stock with a #8 Krieger. I'm planning on mounting a NF 5.5-22x56 on it. Thanks, Ronnie