.277 Wolverine Sheridan Engineering "Slot" Ammo Gauge
.277 Wolverine "Slot Ammo Gauge custom made by Sheridan Engineering using a .277 Wolverine reamer and gauges. SLOT GAUGES Are a variation of our existing ammunition gauge. By taking an ammunition gauge and opening up a window into it, you can now actually see the shoulder, and how everything seats into the chamber. You can verify the fit visually. And see the interface between your ammo and a chamber that you would never otherwise see. These gauges are designed primarily for use where the brass is always full length resized.