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This is the Forster 0.332" neck bushing, part number BUSH-332, a single sizing insert that drops into Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. The whole idea behind bushing sizing is control. Instead of relying on a fixed expander, you pick the exact bushing diameter that gives you the neck tension your rifle and brass want, and the 0.332" fits right into that lineup for popular .30 caliber work like .308 Winchester, .30-06, and .300 Win Mag.
Forster hones and heat treats every bushing to the precise inside diameter stamped on it, then runs them through a cryogenic process that refines and closes the steel's surface. That super-smooth finish is what you feel and see on the bench. Brass glides through cleaner, necks get worked less, and your loaded rounds come out with better concentricity and more repeatable bullet grip round after round.
Sizing bushings is all about measurement, not guesswork. The common method is to measure a loaded round at the neck with a caliper or micrometer, since that reading equals bullet diameter plus twice your neck wall thickness. From there, you choose a bushing roughly .002" to .003" under that number, which leaves you with about .001" to .002" of grip on the bullet once the brass springs back. If you're running a tight-neck chamber you may step down smaller, and thicker-necked brass without neck turning might push you a size larger. Forster offers these in .001" increments, so there's almost always a bushing that lands right where you need it.
One thing worth knowing up front: Forster bushings are built specifically for Forster dies and won't swap into Redding or L.E. Wilson setups. If you're already running a Forster bushing die, this .332" insert will drop right in and get to work.
This bushing is made for Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. It is not interchangeable with Redding or L.E. Wilson bushings, so it only works in Forster bushing dies. If you run a Forster bushing die, it drops right in.
Measure a loaded round at the neck with a caliper or micrometer, which gives you bullet diameter plus twice the neck wall thickness. Then choose a bushing about .002" to .003" smaller than that reading, which leaves roughly .001" to .002" of grip after the brass springs back. If 0.332" lands in that window for your brass, it's your size.
Each bushing is heat treated and honed to the exact inside diameter listed, then run through a cryogenic process that smooths and closes the steel's surface. That ultra-smooth finish reduces how hard the neck gets worked and helps produce more concentric, consistent loaded rounds. They're also offered in .001" increments for fine tuning.
This listing is for the single 0.332" bushing only. No die is included, and it assumes you already have a compatible Forster bushing die on your bench. If you need multiple neck tensions, you'll want to pick up additional sizes.
| UPC | 757253998249 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-332 |
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