Sinclair International
Sinclair Shoulder Bump Gauge Insert #40 40 Degree Ackley 6mm
Sinclair Shoulder Bump Gauge Insert #40 40 Degree Ackley 6mm
The Sinclair Shoulder Bump Gauge Insert #40 is a precision reloading component made for 40 Degree Ackley 6mm cartridges. It measures shoulder position so you can set case headspace accurately and keep cartridge dimensions consistent for a proper chamber fit.
Machined for precise shoulder measurement, this insert works with the Sinclair Shoulder Bump Gauge system and is intended for reloaders loading 40 Degree Ackley 6mm rifles.
Key Features
| Brand | Sinclair International |
| Product Type | Shoulder Bump Gauge Insert |
| Caliber | 40 Degree Ackley 6mm |
| Compatibility | Sinclair Shoulder Bump Gauge |
| Material | Steel |
| Manufacturer SKU | 749011482 |
| UPC | 050806111295 |
| Condition | New |
Compatibility
Fits the Sinclair Shoulder Bump Gauge and is intended for 40 Degree Ackley 6mm cartridges.
How to use
Install the insert in a Sinclair Shoulder Bump Gauge, then measure a fired case to determine its shoulder position. Adjust your sizing die until the shoulder is bumped to the desired amount for a consistent chamber fit.
Frequently asked questions
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