K&M Custom Gauge Pin

Measures neck inside diameter

Checking your Case Neck with Gage Pins:

After expanding use the corresponding gage pins to confirm the neck sized as expected. The feel you are looking for is a light drag on the gage pin. When sized properly the gage pin will act as a piston as you push the pin into the case neck while holding your finger or thumb over the primer pocket. You can actually feel the air compress inside the case. Quite often the brass can be harder or softer than expected. By stepping up or down on the expand mandrel bullet tension size you can achieve the desired neck tension to your gage pin.

Shipping & Returns

Shipping Costs are calculated at the checkout, based on your postcode and the weight of all combined items.

Due to Australia Post limitations, the maximum weight for each order is 20kg. Orders over this weight limit will have to be placed in two separate orders. For heavy items please contact us directly to discuss shipping.

Expensive and/or fragile items will only be shipped via registered post with adequate insurance.

Due to Australian regulations we are restricted to shipping all projectiles to customers located in Australia only.

Dangerous goods including powders, solvents and primers cannot be shipped and MUST be collected from the QStore.

Click here to view our full policy.