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Neck tension is one of those little details that separates good ammo from great ammo, and the Forster 0.300" Neck Bushing gives you direct control over it. This steel bushing has a true 0.300 inch inside diameter and sizes only the case neck, so you can fine-tune bullet grip without overworking the brass. It's a single bushing, which makes it a smart pickup whether you're replacing a lost one, chasing a slightly different neck tension, or building out a full range of sizes for your reloading bench.
Forster bushings are heat treated and honed to the exact inside diameter stamped on them, then run through a cryogenic process that refines and closes the surface of the steel. The result is an interior finish that Forster calls "smooth as silk," and that smoothness translates to straighter necks, lower runout, and better loaded rounds. Because these bushings come in 0.001 inch increments, you can make tiny adjustments to match your exact brass and the neck wall thickness you're working with.
The general rule is to choose a bushing roughly 0.002 inch smaller than the neck diameter of a loaded round measured at the case neck. You can also measure your neck wall thickness, multiply it by two, add your bullet diameter, then subtract about 0.002 inch. If you turn your necks or run thinner brass you may land a touch smaller, and thicker or untouched necks may call for a touch larger, which is exactly why owning a few bushings around your target size pays off.
This bushing is made for Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. One thing to keep in mind: Forster bushings are built to work in Forster dies and are not cross-compatible with Redding or L.E. Wilson bushing dies. Match it to your Forster setup and it drops right in.
A good starting point is to measure the neck diameter of a loaded round and subtract about 0.002 inch. You can also measure your case neck wall thickness, multiply it by two, add your bullet diameter, and subtract roughly 0.002 inch. If you turn necks or run thin brass you may go a touch smaller, and thicker necks may call for a touch larger, so it helps to keep a few sizes on hand.
No. Forster bushings are designed specifically for Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. They are not cross-compatible with Redding or L.E. Wilson bushing dies, so make sure you're running a Forster die.
After the bushings are heat treated, Forster runs them through a super-cooling cryogenic process that refines and closes the surface of the steel. That creates an ultra-smooth interior finish, which helps produce straighter necks and better, more consistent loaded rounds. Smoother sizing also means less drag on the brass as the neck passes through.
This is a single 0.300 inch bushing. Forster offers these in 0.001 inch increments, so many reloaders buy a few sizes around their target neck tension to cover different brass and fine-tune their loads.
| UPC | 757253998331 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-300 |
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