Amazon.com : RCBS 88318 Precision Mic 7mm Win Short Mag Case Prep Tool : Gunsmithing Tools And Accessories : Sports & Outdoors
RCBS Precision Mic Chamber Head Space
RCBS Precision Micrometer .204 Ruger [FC-076683882998] - Cheaper Than Dirt
RCBS - Accurately measure your exact rifle chamber headspace and determine bullet seating depth to 0.001 when using a Precision Mic. Find your caliber: http://bit.ly/2IssIW3 | Facebook