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Neck tension is one of those details that separates good handloads from great ones, and the Forster .290" Neck Bushing gives you precise control over it. This insert carries a .290 inch interior diameter and slips into your Forster Bushing Bump Neck Sizing Die or Bushing Full Length Sizing Die, letting you size the case neck to the exact dimension your brass and bullets call for. Forster offers these in .001 inch steps, so you can fine tune for case neck wall thickness and the amount of bullet grip you're after.
Forster machines and hones each bushing to the precise inside diameter stamped on it, then runs the steel through a cryogenic treatment process. That super-cooling step refines and closes the surface of the metal, leaving an interior that's described as smooth as silk. A slicker bushing means less drag on the brass as it passes through, which translates to straighter necks, less runout, and loaded rounds that chamber and shoot more consistently.
The general rule is to choose a bushing roughly .002 inch smaller than your loaded round measures at the case neck. Mic a few loaded cartridges, take the smallest reading, subtract .002 inch, and that's your bushing number. If you want a little more bullet grip, subtract .003 inch instead. Keep in mind that brass work hardens after several firings, so you may eventually reach for a smaller bushing to maintain the same initial tension. This .290 bushing fits necks in that range, so check your measurements before ordering to make sure it matches your cartridge.
This is a Forster bushing built specifically for Forster dies. It is not interchangeable with Redding or Wilson bushings, so it needs to live in a Forster Bushing Bump or Full Length Bushing die to do its job. Installed chamfered side down in the top of the die body, it lets you set neck tension independently without overworking the brass.
This bushing is designed for Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. It installs chamfered side down in the top of the die body. It is built specifically for Forster dies and is not interchangeable with Redding or Wilson bushings.
Measure the outside neck diameter of several loaded rounds with a micrometer or dial caliper and use the smallest reading. Subtract .002 inch from that number to get your bushing size, or subtract .003 inch if you want more bullet grip. If that math lands on .290, this is your bushing.
After Forster heat treats and hones each bushing to its exact inside diameter, the steel goes through a super-cooling cryogenic process. This refines and closes the surface of the metal for a smoother interior finish. The payoff is less friction on the brass, which helps produce straighter, more consistent loaded rounds.
This is just the single .290 diameter bushing on its own. The Bushing Bump Neck Sizing Die is sold separately, and bushings are offered individually in .001 inch increments so you can tailor your neck tension. Many reloaders keep a couple of sizes on hand to adjust as their brass work hardens over repeated firings.
| UPC | 757253998430 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-290 |
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