On a .177 RWS-54 springer, I had a early version of the Bushnell Banner Airgun scope like the one linked to below.
Mine was a 1990s version, 3-9x40.
The nice thing was the AO went down to 10 yds.
New, they were about $100.
They are a sleeper on the used market, if you stumble onto one of them, probably find one for around $20.
I don't think the scope is stamped as a Airgun scope, but the giveaway is the AO adjusting down to 10 yd (or maybe labeled 50 feet).
I don't know if they make them anymore? But Pyramydair still has it listed on their website, but says not available.
We've got a great price on Bushnell Banner 4-12x40 AO Rifle Scope, Multi-X Reticle, 1/4 MOA, 1" Tube at Pyramyd AIR. Shop where the experts do!
www.pyramydair.com