Hello Folks,
Thanks to Daryl_S and 9ThreeXFifty7 I was encouraged to try again to get my 7x57 Ruger #1a to shoot. Today I used Sierra 140 gr spitzer bullets with H4350 (MV 2653) to shoot a couple of three-shot groups at 100 yards. They measured 1.025 and 0.992 inches. Both groups were spread horizontally, as the wind was 10 gusting 20 mph. This is quite satisfactory. Thanks fellows.
Take care, Tom