I've been getting into airguns a bit more for indoor practice and am really enjoying it.  Right now, I've got an Air Arms 510 set up with a scope, but have always wanted to try a biathlon style rifle.   Those are set up with diopter sights, not scopes.
Is it even possible to shoot those sights properly with 55 year old eyes?   I am nearsighted and have progressive lenses.
			
		
