Looking to see if anyone happens to have a Quality (Bartlein, Benchmark, etc) 30 Caliber 18"-20" Carbon barrel blank in a 1:9 twist they would sell. I have access to a 1:10 but want a faster twist for this project. Also looking for a 18" 7mm 1:8 twist too. Figured I would check here before I order direct from Bartlien.