Lee Undersize Sizing Die Only Carbide .45acp Review

Let’s Talk About Lee Undersize Sizing Die Only Carbide .45acp

The Lee Undersize Sizing Die Only Carbide .45acp is a specialized reloading tool designed to ensure consistent cartridge dimensions, particularly for semi-automatic pistols. Crafted by Lee Precision, a trusted name in reloading equipment, this die aims to address issues of chambering in firearms with tighter tolerances. This die promises enhanced reliability and accuracy through consistent sizing, but does it deliver on these promises?

I’ve been reloading .45 ACP for over a decade, primarily for my 1911s and a couple of other semi-auto pistols. However, I encountered occasional chambering issues, especially with brass that had been fired multiple times or in different firearms. I was looking for a solution to ensure that every round I reloaded would chamber reliably in all my .45 ACP pistols, regardless of brass history.

My initial impression of the Lee Undersize Sizing Die Only Carbide .45acp was positive. The die felt solid and well-made, with a smooth carbide insert promising consistent sizing. Compared to standard sizing dies, this one seemed slightly more robust. My reasoning behind selecting this die over another brand was Lee’s reputation for offering value and precision.

Upon opening the package, I was immediately drawn to the simple design, which promised ease of use. I was excited to see if it could eliminate the occasional chambering problems I had encountered. My expectation was to have a tool that would significantly improve the reliability of my reloads, and my first impressions gave me a good amount of hope.

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Real-World Testing: Putting Lee Undersize Sizing Die Only Carbide .45acp to the Test

First Use Experience

My first test of the Lee Undersize Sizing Die Only Carbide .45acp was at my home reloading bench. I processed a batch of 200 mixed .45 ACP cases, some of which had previously given me chambering issues. The sizing process felt smooth and consistent.

I noticed a slight increase in the force required to size the cases compared to my standard die, which was to be expected, given the undersized dimensions. I then loaded these cases with my standard .45 ACP load and headed to the range. I was able to test the die in my 1911 and Glock 21. Every round chambered flawlessly in both pistols, even those that had previously been problematic.

Extended Use & Reliability

After several months of regular use, the Lee Undersize Sizing Die Only Carbide .45acp has proven to be a reliable and effective tool. There is no noticeable wear and tear on the die itself, and it continues to produce consistently sized cases. Cleaning is simple; a quick wipe-down with a clean cloth after each reloading session is all that’s needed.

Compared to my previous experience with standard sizing dies, the Lee Undersize Sizing Die Only Carbide .45acp significantly outperforms them in terms of ensuring reliable chambering. The peace of mind knowing that every round will chamber correctly is invaluable. This is particularly true when I’m reloading for competition or self-defense purposes.

Breaking Down the Features of Lee Undersize Sizing Die Only Carbide .45acp

Specifications

• Caliber: .45 ACP This die is specifically designed for the .45 ACP cartridge, a classic and widely popular pistol round.
• Type: Carbide Sizing Die The carbide insert ensures smooth and consistent sizing while minimizing case wear.
• Number of Dies: Single Die This is a standalone sizing die, meant to be used in conjunction with other dies for the full reloading process.
• Carbide: Yes The carbide insert is a critical feature for smooth operation and long die life.
• Dimensions: 1.65 x 1.70 x 4.75 inches These dimensions are compact and standard for Lee dies, fitting most reloading presses.
• Height: 1.6500 Consistent height contributes to proper press alignment and reliable operation.
• Width: 1.7000 Standard width ensures compatibility with various reloading press models.
• Length: 4.7500 Appropriate length for proper case engagement and sizing.

These specifications are important because they directly impact the die’s ability to consistently resize cases, improve chambering reliability, and withstand extended use. The carbide insert is particularly noteworthy as it significantly reduces friction and extends the life of the die.

Performance & Functionality

The Lee Undersize Sizing Die Only Carbide .45acp performs its primary function exceptionally well: it resizes .45 ACP cases to slightly smaller dimensions than standard dies. This is crucial for ensuring reliable chambering in semi-automatic pistols, especially those with tight tolerances. While most standard dies may work well, some cases will simply not seat completely without significant force being applied.

The main strength of this die is its ability to eliminate chambering issues. A potential weakness is that the undersizing might slightly reduce case life if used excessively, though I have not encountered such an issue in my experience. The die meets and exceeds my expectations by providing consistent results and improving the reliability of my reloads.

Design & Ergonomics

The Lee Undersize Sizing Die Only Carbide .45acp features a simple, functional design. The steel body is robust and well-machined, while the carbide insert is smoothly polished for consistent sizing. The die is lightweight and easy to handle.

The die is incredibly user-friendly, requiring no special tools or adjustments. It is compatible with any standard reloading press, and the sizing process is straightforward.

Durability & Maintenance

The Lee Undersize Sizing Die Only Carbide .45acp is built to last. The steel body and carbide insert are highly durable and resistant to wear and tear. With proper care, this die should last for thousands of rounds.

Maintenance is minimal. Simply wipe the die clean after each use and apply a light coat of oil to prevent rust. The carbide insert requires no special cleaning or maintenance.

Accessories and Customization Options

The Lee Undersize Sizing Die Only Carbide .45acp is a standalone die and does not come with any accessories. There are no customization options available for this particular die, as its function is very specific. It is designed to work with standard reloading presses and shell holders.

While there are no direct accessories for the die itself, it is essential to use it in conjunction with other reloading dies. This includes a case preparation die or seater for proper undersizing. Also ensure to chamfer the case before storing it long-term.

Pros and Cons of Lee Undersize Sizing Die Only Carbide .45acp