Gary, I think the K2.5 Weaver is a better scope than the Lyman Alaskan. I have a Alaskan and All Weather Lyman and two of the K2.5's. 1" tube vs 3/4" tube gives you a little more light. The quality of glass is very similar. The post reticule is a nice option on the K2.5.
The Lyman would be correct on the Springfield.