Does anyone know of a service such as this, since Premier Reticle is out of business?

Loops are available in the Burris 8- by 32-power commercially available riflescope, but many topflight shooters have custom reticles installed by Dick Thomas at Premier Reticles. The Burris product has a duplex crosshair with a 1-minute circle in the middle.

Massey’s loop in his straight 36-power Leupold is a 1-minute internal diameter hole with a 1.25-minute outside diameter, which includes the width of the reticle wires. “I can actually see through the loop and hold a dot or spot on the target inside the loop like an aperature,” Massey said. “Everything I shoot is optically circle inside circle.”

Thanks
Saikatana