I have a Remington 513T with redfield peep sights which can outperform some guys with scopes at 100 yds. The problem is that my eyes due to age get blurry at this distance. Is there anyone who sells or makes a base mount long enough to mount a modern scope and be able to adjust the scope for proper eye relief? I will never drill the receiver so this is not an option. I would like to keep the rifle as original as possible.