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Neck tension is one of those little details that separates good handloads from great ones, and a bushing is how you take control of it. This .335 diameter Forster bushing lets you size the case neck to your exact spec so your bullets release the same way every single shot. It fits inside Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies, and swapping bushings takes seconds, so you can fine tune tension without buying a whole new die.
Forster honors a specific process on these. The steel is run through a super cooling cryogenic treatment that refines and closes up the surface of the metal, which gives you an ultra smooth interior that sizes brass cleanly. From there each bushing is heat treated and honed to the precise inside diameter printed on it, so the .335 you order is the .335 you get. That smooth bore means less drag on the neck and less marring of your cases as they pass through.
This bushing is sized for a loaded neck diameter right around .337 to .338, which puts it in the wheelhouse of cartridges like the .338 family and .300 Win Mag depending on your brass and bullet. A common way to land on your number is to measure the outside neck of a loaded round and subtract .002 to .003 for your desired tension. Since brass wall thickness varies between brands, it's smart to keep a bushing or two on either side of your target so you can tune as you go.
For the cleanest, most concentric necks, a lot of precision reloaders will remove the expander and let the bushing do the work, or pair it with a mandrel step to set final inside diameter. Either way, this bushing works the brass less than a traditional one piece die, which means less work hardening and more reloads out of your cases. One thing worth noting is that Forster bushings are built for Forster dies and won't interchange with L.E. Wilson setups.
It's made to work in Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. Forster bushings are designed specifically for Forster dies, so note that they won't interchange with L.E. Wilson dies.
Measure the outside neck diameter of a loaded round with the bullet seated, then subtract .002 to .003 inch for your desired neck tension. That number is your bushing size. Because neck wall thickness differs between brass brands, it's a good idea to have a bushing one size above and below on hand so you can fine tune.
The super cooling cryogenic process refines and closes up the surface of the steel, giving you an ultra smooth interior. That translates to cleaner, lower drag sizing and bushings that hold their dimension over a long service life. Each one is also heat treated and honed to the exact inside diameter stated.
Yes. Sizing only the neck with the correct bushing works the brass far less than a traditional one piece die, which reduces work hardening. Less working of the neck generally means more firings before you need to anneal or retire a case.
| UPC | 757253998218 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BUSH-335 |
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