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The Forster .311" Neck Bushing is a single steel bushing honed to a precise .311-inch inside diameter, giving you fine control over how much your case necks get sized. Instead of relying on a fixed-diameter sizing die and an expander ball, a bushing setup lets you choose exactly how far the neck gets squeezed down, which is where consistent neck tension and lower runout come from. This one carries Forster's BUSH-311 part number and works with their Bushing Bump Neck Sizing Dies as well as their Bushing Full Length Sizing Dies.
Forster runs these bushings through a super-cooling cryogenic process after heat treating. The idea is that the deep freeze refines and tightens up the steel's surface so the bushing sizes smooth as silk and holds up over a long reloading life. A cleaner interior finish means less drag on the brass and more uniform neck tension round to round, which is exactly what you're chasing when you step up to a bushing die.
Bushing selection comes down to your brass and your chamber, not just the caliber on the box. The general starting point is to measure the neck of a loaded round and choose a bushing roughly .002" smaller than that measurement. If you're outside-neck-turning or running a tight-necked chamber, you may want to go smaller. Thick-walled brass that hasn't been turned often calls for a larger bushing. Because Forster offers these in .001-inch increments, you can fine-tune the fit and keep a couple of sizes on the bench to match different brass lots.
This listing is for one bushing only, and the die is sold separately. It's also worth noting that Forster bushings are built for Forster dies and are not cross-compatible with L.E. Wilson or Redding bushing dies, so make sure your die is a Forster unit before ordering. Order by the inside diameter you need, and this one measures .311 inches.
It's designed for Forster's Bushing Bump Neck Sizing Dies and their Bushing Full Length Sizing Dies. Keep in mind these are Forster-specific and won't work in L.E. Wilson or Redding bushing dies. If your die is a Forster unit, this bushing drops right in.
Measure the neck diameter of a loaded round, then pick a bushing roughly .002 inch smaller than that measurement as your starting point. A .311 bushing is a common fit for several .30 and .303 caliber setups, but your exact number depends on your brass wall thickness and chamber. Because Forster offers these in .001-inch steps, many reloaders keep a couple of nearby sizes on hand to fine-tune neck tension.
No, this is one bushing only and the die is sold separately. You'll need a Forster Bushing Bump or Bushing Full Length sizing die to use it. Order by the inside diameter you need, which in this case is .311 inches.
After the bushing is heat treated, Forster runs it through a super-cooling cryogenic process that refines and tightens the steel's surface. The result is a smoother interior finish that reduces drag on the case neck and helps deliver more consistent neck tension. It also adds durability for a longer working life on the bench.
| UPC | 757253997921 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-311 |
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