Scope wash out question for night shooting

I hunt pidgeons, starlings and English sparrows at night, in-doors in large lighted dairy barns that measure approximately 300 yards by 60 yards and are kept lit at night to increase milk production. The roof is domed and about 50-60' high at the apex.

Shots range from close (15 yards) to as far as you can possibly shoot with any airgun, but the limiting factor is often low light clarity and "wash out" from the lights that light the barn.

I've hunted with may different scopes, but mostly mid to moderate priced models (like the Legend) for 10-18 ft/lb guns like an HW50, TX or slower shooting Air Arms S410 guns. High powered guns aren't appropriate as they are way too likely to pierce the barn walls and roof.

My question: Can you recommend scopes that will do well in low light and tend to "wash out" less when shooting near lights? Has anyone else had this experience?

If so, what scope do you recommend? This isn't a simple matter of buying a huge objective lens scope to gathers tons of light. Those bigg objectives wash out too.



Thanks
Brad