SKU: 749019281
UPC: 611760261008
MPN: 26100
The Redding Slant Bed Concentricity Gauge (Model 26100) is a precision measuring tool for handloaders who want to check case neck and bullet run-out on their finished ammunition. It accepts any cartridge case from 17 Hornet to 408 CheyTac, so a single unit covers everything from varmint loads to large-format long-range cartridges. The slant-bed layout moves the bearing surface down and away from the shooter, which keeps the dial indicator in a clear line of sight at a fixed 30-degree angle. For reloaders chasing tighter groups, this is the gauge that tells you whether your run-out is the reason rounds aren't grouping the way the data says they should.
The case rolls on precision stainless steel bearings that make single-point contact, paired with stainless steel guide ways that resist wear over years of use. Bearing sliders on those guide ways adjust linearly for different cartridge lengths, so you set up once for a given case and read directly off the dial. The gauge ships complete with a dial indicator featuring a 60mm face graduated in 0.001-inch increments, mounted on a fixed vertical stand at the 30-degree sight angle. The slant-bed geometry is what eliminates the off-center readings and setup errors common to flat-bed designs. It can also be converted for left-hand use, and it arrives with non-skid rubber feet or direct mounting holes for those who want it bolted to a bench.
Most handloaders use this gauge two ways: checking case neck run-out before loading to cull problem brass, then verifying bullet run-out after seating to confirm the finished round is straight. Run-out under 0.002 inch is a reasonable target for precision rifle loads, and this tool reads to 0.001 inch so you can sort accordingly. It pairs naturally with quality seating dies and a good set of calipers on the bench. If you're building match ammunition, browse our micrometer seating tools and rifle dies to round out a precision loading setup.
It accepts any cartridge case from 17 Hornet up to 408 CheyTac. The bearing sliders move along the guide ways to adjust for different case lengths, so one gauge covers small varmint rounds through large long-range cartridges without additional parts.
Yes. The gauge ships complete with a dial indicator that has a 60mm face graduated in 0.001-inch increments. It arrives ready to use out of the box, so no separate indicator purchase is needed to start measuring run-out.
For precision rifle loads, many handloaders target run-out under 0.002 inch on the loaded round. Since the included dial indicator reads to 0.001 inch, you can sort and cull cases and finished ammunition against whatever standard your accuracy goals call for.
The slant-bed layout moves the bearing surface down and away from you and holds the indicator at a fixed 30-degree angle. That keeps the dial in clear view and uses single-point bearing contact to eliminate the off-center readings and setup errors common to flat-bed gauges.
Yes. The gauge can be converted for left-hand use, and it includes non-skid rubber feet or direct mounting holes so you can set it on the bench or bolt it down in whatever orientation works for you.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
