The Hap Baker range at the Carrol County landfill welcomes black powder shooters.
It's a bit of a drive from Harford Co., but it's not hard to get to . It's on Rt. 140 (Westminster Pike) before you get to Westminster.
The winter hours are cut back a bit, but weekends are always open & the prices are reasonable. It can get busy during deer season, but usually it's not bad.
Coming out rt. 140 turn right into the landfill & follow the signs.
It's a covered outdoor range. I've shot just about everything there from .22's to 12 ga. slugs as well as a BP Hawken & Old Army revolver.
I believe I also shot the Old Army in Timonium at Continental Arms, but it's been a while since I've been there.