The L.E. Wilson Case Gage for 7mm Remington Short Action Ultra Mag (brand part no. CG-7RSAUM) is a one-piece precision tool from L.E. Wilson built to check fired brass before it goes back through a sizing die. It reads both overall case length and headspace in a single pass, which matters for a short-action magnum cartridge like the 7mm RSAUM where case life and consistency are harder to hold. It is compact enough for a range bag and simple enough to use on every case in a batch. Handloaders running this cartridge treat the check as a normal part of case prep.

Key Specifications

• Case length check flags brass that has stretched past the safe maximum before trimming.
• Headspace check confirms the case is within tolerance for safe, consistent chambering.
• No body diameter measurement keeps the gage focused on length and headspace only.
• Fired-case use makes it the basis for trim and resizing decisions after firing.
• One-piece design keeps the tool simple and durable at the bench.
• 7mm RSAUM fit means it is sized specifically for this cartridge.

Frequently Asked Questions

What does this gage measure? It measures both overall case length and headspace on fired 7mm RSAUM brass in one reading.

Does it replace my calipers? No, it does not measure body diameter, so use it alongside calipers.

When should I use it? Run it on fired cases to decide whether trimming or resizing is needed before the next load.

Buy the L.E. Wilson Case Gage for 7mm RSAUM

Keep your 7mm RSAUM brass consistent from one reload to the next with this case gage. Order it from our Lubbock, Texas gun shop for fast shipping, and check out the rest of our case preparation equipment.