Description
Neck tension is one of those little details that separates ho-hum groups from the kind that make you double check your target. This Forster 0.270" neck bushing gives you the control to tune it precisely. It's a single steel bushing built to work inside Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies, letting you size the case neck to your exact spec rather than whatever a standard die decides for you.
What the 0.270" Bushing Actually Does
Instead of sizing the whole neck the same way every time, a bushing system sizes based on the wall thickness of your brass. You pick a bushing diameter that leaves the amount of tension you want on the bullet. Forster offers these in 0.001" steps across a wide range, so once you measure a loaded round's neck diameter you can land right where you need to be. That kind of fine adjustment is a big deal for folks chasing consistency and longer brass life, since you're not overworking the neck every firing.
How Forster Builds the BUSH-270
Forster runs these bushings through a super-cooling cryogenic process, which refines and closes up the steel's surface for a slicker, longer-lasting bushing. From there they're heat treated and honed to the precise inside diameter marked on the bushing. The result is that "smooth as silk" feel when brass passes through, which translates to straighter necks and better concentricity on your loaded ammo.
Fitment Worth Knowing Before You Order
One important note: Forster bushings are designed to run in Forster dies only. They aren't cross-compatible with Redding, RCBS, or other brands of bushing dies, so make sure you're pairing this with a Forster Bushing Bump or Bushing Full Length setup. If you already run one of those dies and want to fine tune tension or stock a backup, the 0.270" is a handy size to have in the box.
Key Specifications
- Manufacturer: Forster Products
- Manufacturer Part Number: BUSH-270
- UPC: 757253998584
- Bushing Inside Diameter: 0.270 in
- Material: Cryogenically treated steel
- Finish: Heat treated and honed to precise ID
- Sizing Increments: Available in 0.001 in steps across the range
- Compatibility: Forster Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies
- Brand Cross-Compatibility: Forster dies only, not interchangeable with other brands
- Type: Interchangeable neck sizing bushing
What’s Included
- One Forster 0.270" neck bushing (BUSH-270)
Frequently Asked Questions
What dies does the Forster 0.270" neck bushing fit?
It's made to work in Forster's Bushing Bump Neck Sizing Dies and Bushing Full Length Sizing Dies. Forster bushings are designed for Forster dies only and are not interchangeable with Redding, RCBS, or other brands. If you're running a Forster bushing die, this one drops right in.
How do I know if 0.270" is the right bushing size for me?
Measure the outside diameter of the neck on a loaded round, then choose a bushing that's a touch smaller to get the neck tension you want. Because Forster offers these in 0.001" increments, you can fine tune to your exact brass and load. Many reloaders keep a few sizes on hand to dial things in.
Why does Forster use a cryogenic process on these bushings?
The super-cooling cryogenic treatment refines and closes up the steel's surface, which makes for an ultra smooth, longer-lasting bushing. After that the bushings are heat treated and honed to the precise inside diameter stated. The smoother the bushing, the cleaner the neck sizing and the straighter your loaded rounds.
Will a bushing like this help my case life and accuracy?
Yes, that's the main appeal. Bushing sizing works the neck based on your brass wall thickness rather than oversizing and pulling it back up with an expander, so you avoid overworking the neck. That typically means better concentricity, more consistent neck tension, and brass that lasts more firings.




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