Lyman's E-ZEE Case Gauge - MSR is a time saver for reloaders. The precisely machined metal "No-Go" gauge is cut to SAAMI maximum allowable case length. If a case fails to pass through the gauge, it needs to be trimmed. This convenient gauge can be used to sort cases for the following popular MSR calibers: .223/5.56, 224 Valkyrie, 6.5 Grendel, 6.5 Creedmoor, 6.8 SPC, 300 Blackout, 308 Win/7.62, 7.62x39, 9mm, 450 Bushmaster, 458SOCOM,