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Fine-tuning neck tension is one of the easiest ways to tighten up your groups, and the Forster .312 neck bushing is how you do it. This single bushing drops into a Forster Bushing Bump Neck Sizing Die or a Forster Bushing Full Length Sizing Die and controls exactly how much the case neck gets sized down. Instead of relying on a one-size expander ball, the bushing you choose sets the inside neck diameter, so you get the grip on the bullet you're after and nothing more.
The general rule is to pick a bushing roughly .002 inch smaller than your loaded round measures at the case neck. Forster offers these in .001 inch steps, which lets you nudge neck tension up or down to match your brass. Thicker neck walls or no neck turning usually calls for a larger bushing, while tight-chambered rifles or turned necks may want something smaller. Order by the inside diameter you want and you're set.
Forster doesn't skimp on how these are made. Each bushing is heat treated and honed to the exact inside diameter stamped on it, then run through a cryogenic process. That super-cooling step refines and closes up the steel's surface, giving you that slick, drag-free feel as the neck passes through. A smoother bushing means less working of the brass, better concentricity, and loaded rounds that come out more uniform from one to the next.
Worth knowing up front: this listing is for one .312 bushing only, no die included. Forster bushings are built specifically for Forster dies and are not compatible with Redding or L.E. Wilson bushing dies, so make sure you're running it in the right setup. If you already have a Forster bushing die on the bench, this is a simple, affordable way to dial in the perfect neck tension for your rifle.
It's made for Forster's Bushing Bump Neck Sizing Die and Bushing Full Length Sizing Die. These bushings are built specifically for Forster dies and are not compatible with Redding or L.E. Wilson bushing dies. If you're running a Forster bushing die, you're good to go.
A good starting point is to measure the neck diameter of a loaded round and subtract about .002 inch. That gives you roughly the neck tension most reloaders are after. Since Forster offers bushings in .001 inch steps, you can fine-tune from there based on your neck wall thickness and whether or not you turn necks.
No, this listing is for one .312 bushing only and does not include a die. You'll need a compatible Forster bushing die to use it. Many reloaders keep several bushing sizes on hand to fine-tune neck tension across different loads.
Each bushing is heat treated and honed to the exact inside diameter marked on it, then cryogenically treated. That super-cooling process refines and closes the steel's surface for a slick finish. The result is less drag on the brass and more consistent, concentric loaded rounds.
| UPC | 757253997914 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-312 |
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