Description
SAC Neck Sizing Bushings
Universal Dimensions and Compatibility
Our SAC Neck Sizing Bushings feature universal outside dimensions of .500″ diameter by .375″ height, making them compatible with MOST resizing dies on the market. This standardized size ensures versatility and ease of use for reloaders across various platforms. However, it’s important to note that these bushings are not compatible with our SAC Modular Sizing dies, which have a different design philosophy.
Innovative Design
At SAC, we’ve always strived to push the boundaries of reloading technology. Our neck sizing bushings are the result of extensive research and development, born from the frustration of dealing with existing solutions that fell short of our exacting standards. After rigorous testing and analysis, we discovered that our SAC Neck Sizing Bushings minimize neck runout in cartridge brass for nearly every die we’ve tested.
The journey to this breakthrough began when we identified critical flaws in commercially available neck bushings. The primary issue we encountered was the prevalence of straight, undersized holes compared to the brass being sized. This seemingly minor detail actually has significant implications for the quality and consistency of reloaded ammunition.
The Problem with Traditional Bushings
To understand the importance of our innovation, consider the following analogy: Imagine trying to push a thin-walled straight tube into an undersized straight hole. The result is predictable – inconsistent contact, potential deformation, and a lack of true alignment. This is essentially what happens when using traditional neck bushings, leading to less-than-optimal results in terms of neck runout and overall cartridge consistency.
Advanced Internal Geometry
To address these inherent flaws, we’ve engineered an entirely new internal bushing geometry. This proprietary design is the heart of our SAC Neck Sizing Bushings, carefully crafted to achieve two primary goals:
- Significantly reduce neck runout
- Increase loaded cartridge concentricity in the chamber
The result is a bushing that doesn’t just force the brass into shape but guides it into proper alignment, ensuring consistent neck tension and improved accuracy potential for your handloads.
Premium Materials and Finish
We believe that superior performance starts with superior materials. That’s why we construct our neck sizing bushings from 17-4 stainless steel, a high-grade alloy known for its strength, corrosion resistance, and dimensional stability. This choice of material ensures that our bushings maintain their precise dimensions over countless reloading cycles.
To further enhance performance and durability, we process our bushings with the same black nitriding treatment used on our renowned Precision Resizing Dies. This surface treatment does more than just provide an attractive appearance – it significantly improves the bushing’s surface properties.
The result of this careful material selection and processing is twofold:
- An incredibly smooth inside finish that minimizes friction and wear on your brass
- An extremely slick external finish due to the combination of nitriding and polishing
These surface characteristics not only contribute to the bushing’s performance but also extend its lifespan, providing you with a tool that will serve your reloading needs for years to come.
By addressing the fundamental issues with traditional neck bushings and leveraging advanced materials and manufacturing techniques, our SAC Neck Sizing Bushings represent a significant leap forward in reloading technology. Whether you’re a precision long-range shooter, a competitive marksman, or simply a reloader who demands the best from their equipment, these bushings are designed to elevate the quality and consistency of your handloaded ammunition.
Neck Sizing Bushing
Steve (verified owner) –
The answer to reduced run out with redding s dies. Keeps cases very concentric compared to stock redding bushings. Can’t wait for the .244 and the .307 sizes to come in stock to start enjoying better results with my other calibers.
Caleb Martínez (verified owner) –
(The fix ) for neck run out, went from my worst case .004 to .0005 and my best case .0005 to .0002 or so they just work, at last for me, I no longer spend any dime in any other brand of neck bushings!
Mike (verified owner) –
Just purchased the 263 bushing for my ppc and checked 20 or so cases out of a 100 and none had runout over .001. Most were at or under .0005 which is a significant improvement over my redding titanium nitride which gave me 1-2 thou on average…will it show up on the target at 1-300yds is hard to say, but it is good to know that variable is out of the equation! This bushing sizes a smaller portion of the neck as compared to my redding which is perfect for the 68gr BT that I shoot. I am running a JLC precision die (sorry SAC I didn’t know about yours before and this die matches my reamer perfectly) and it has purposeful space for the bushing to float a bit already. Excellent product and results!
Jerrod Bier –
While I’m not new to relaxing. i am new to precision reloading with bushing dies and such. With my competition Redding dies and their bushings runout was .005 and up. I ordered some SAC bushings in the advice of Bolt Action tRelosding on UTube! My runout all but disappeared Chrono numbers improved and groups tightened. i would also like to add fast shipping and great staff! They answered all my questions fast and accurate. Great product – take. My word they are worth. Their weight in gold!
Corey (verified owner) –
Very happy with this product. My runout with my Redding Type S die is running about .0005” now versus the .002” to .003” I was seeing with the Redding titanium bushing. This purchase is a no brainer. Thank you!
Scott Wills (verified owner) –
Fantastic bushings! I am finding that the runout that was fairly common when I used Redding bushings, is near non-existent with these. I have sold all my other bushings and cannot see where I will ever switch from these. They are just too well made.
Scott Wills (verified owner) –
I am finding that the runout that was all to common with Redding bushings, is near non-exist and with the SAC ones. Just very well made.
Scott Wills (verified owner) –
These bushings are just great! They create little to no run out. I have abandoned all my other bushings in favor of these.
Steve (verified owner) –
Was having trouble with extreme spread on my 300prc using Redding bushing….tried these and everything tightened right up.
Chad Porter (verified owner) –
Great products with highest level of craftsmanship! This company goes out of its way for customer service, can’t recommend them enough.
Jonathan Goodman (verified owner) –
I am using these in a Redding type S resizing die. Redding and RCBS bushings in my die almost always caused 0.004″ +/- 0.002″ of runout. These bushings are smoother so the amount of lube on the necks doesn’t seem to be as critical. They don’t leave as severe of drag marks on the necks, if any at all. My runout thus far has gone down to an average of 0.001″ and the most I have seen was 0.002″ on just a few cases.
Gary Lee Manley (verified owner) –
I haven’t had to fight runout to an extreme because, 1) I body size with Forster and 2) neck size with Lee Collet die which keeps me around .002 or less RO.
When I read about these, I decided to buy some for my New 7PRC. I haven’t read or heard of anyone getting more than .0005 RO.
Well, I’m not a bench rest shooter anymore. At 73 I still hunt and harvest big game every year.
For me, it’s knowing that everything is dead on and that gives me confidence in my ammunition, equipment, and self. to keep at it.
I will be buying more for other calibers.
These young men have the Tiger by the tail!
I trust them!
Matthew Thaxton –
The easy answer to minimizing run-out in my FL bushing die.
So much so that after using this for a month I really don’t even check run-out anymore.
Went from .003”-ish to .0015” instantly and consistently.
John Weed (verified owner) –
Black Friday’s order completes my transition from Redding Titanium Nitride and L.E. Wilson Neck Bushings to 100% SAC. Same with transition from Hornady gauges to SAC Headspace and Bullet Comparator inserts. Best darn reloading gear going. Bar none.