I want to thank everyone for their input. I finally got the cosmoline all cleaned out of the Mosin Nagant and I cleaned out the barrels of both the N/S and the little Mossberg 22 my friend gave me. Then it was off to the range for the first serious rifle shooting in perhaps 40 years. My, how the years have changed things. While a freshman in military school, I shot on the rifle team and was a damn good shot. With the 12/20 vision I had then it was easy to focus on both sights and the target literally at the same time, not anymore With my present 30/20 vision and age hardened optics (Presbyopia), focusing on both the sights and target was impossible. I guess Ill be investing in a scope. Shooting the M/N at a 100 yard target at 25 and then 50 yards, I did manage to keep my shots within the 8 ring, but that was about it. This aging business sure does suck! The little Mossberg .22 was accurate enough, but the comb was way too high making it really tough to line up the sights at all, much less comfortably shoot it.
Thanks again to all who posted. I wont concern myself with LOP in my rifles, Ill just work on adjusting the comb for more comfortable shooting and maybe mount scopes on the rifles to accommodate my deteriorating eye sight.
Steve