Redding Instant Indicator/280 Rem Imp 40

The Redding Instant Indicator for .280 Remington Improved 40-degree is a precision reloading tool built for handloaders who demand consistency across every round. Whether you're sorting bullets, checking headspace, or verifying seating depth, this indicator lets you measure and compare critical dimensions within .001 inch—fast enough to catch uniformity issues without slowing your loading session. It's the kind of tool that separates careful reloaders from careless ones, and it pays for itself the first time it prevents a pressure spike or reveals a batch of undersized cases.

The Instant Indicator ships with everything you need for .280 Rem Imp 40-degree work: a bore diameter bushing, surface contactor, shoulder contactor, and headspace gauge. The design is straightforward and precise—no electronics, no guessing, just repeatable measurements. Because cartridges within the same shoulder-angle family share compatible geometry, this indicator can also be used across related rounds if you expand your reloading bench, making it a versatile addition to your case preparation routine.

Hand loaders working with .280 Remington Improved ammo—whether for long-range hunting, precision rifle competition, or load development—will appreciate how quickly the Instant Indicator spots problems that affect accuracy and safety. Uniform headspace, consistent trim length, and matched seating depth are the foundation of reliable, tight-grouping ammunition. This tool lets you verify all three without fumbling with calipers and math.

Key Features

• Measures headspace, bullet seating depth, and trim length within .001 inch precision
• Includes bore diameter bushing, surface contactor, shoulder contactor, and headspace gauge for .280 Rem Imp 40-degree
• Compatible with other cartridges sharing the same shoulder angle
• Fast comparison method for checking uniformity across bullets, cases, and loaded rounds
• Helps verify correct sizing die setup and shoulder bump consistency
• Identifies cases that require trimming before they enter your loading press

Frequently Asked Questions

What can I use the Instant Indicator for beyond .280 Remington Improved?

The Instant Indicator is calibrated for .280 Rem Imp 40-degree, but it can be used across other cartridges with the same 40-degree shoulder angle. If you load multiple cartridges with that same geometry, this single tool covers them all.

What's included in the box?

You get the indicator body, one bore diameter bushing, a surface contactor, a shoulder contactor, a headspace gauge, and complete instructions.

How precise is the measurement?

The Instant Indicator compares dimensions within .001 inch, letting you sort bullets, cases, and loaded ammunition for uniformity and catch out-of-spec rounds before they go downrange.

Do I still need calipers if I have an Instant Indicator?

The Instant Indicator is a comparison tool, not a measuring instrument. It's fast for checking uniformity and relative differences, but it doesn't give you absolute measurements in inches or millimeters—so calipers remain useful for recording actual dimensions and load data.