This is just an informative post about a specific setup. I ordered a Thompson Center Venture .270 WeatherShield and a Burris Fullfield II Scope 3x9x40mm but wasn't sure what rings would work with the setup. I emalied Burris and they said that I would need Medium Rings but I had already order Low Rings. The Thompson Center is not in their 'Compatibility' Chart. I received the rings and was finally able to try them out and low and behold it worked great with the low rings and had room to spare.