These are absolutely the best I have tried. I can't speak to the rifle gauges but the handgun gauges are cut for minimum spec chambers. I have a 45 ACP with a tight chamber that would not go into battery if a bullet was seated just slightly askew. I could always take the pistol apart and do a plunk test but that was a pain. Tried the Wilson gauge but discovered that a cartridge that would drop onto the gauge would fail the plunk test in the barrel.
Then I found the Sheridan gauge. It is cut like my pistol's chamber. Any cartridge that passes the Sheridan gauge will pass the plunk test. I now use them for all of my 45 and 9mm loads.
If anyone is interested, I have an extra, still sealed in the wrapper 9mm slotted gauge I will sell for $45 shipped to your door in CONUS.
405wcf
