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LOCK-N-LOAD CONCENTRICITY GAUGE Reviews & Ratings

This tool identifies and eliminates bullet runout (or wobble). Just place ammunition in the tool, roll it, identify runout, and use the dial indicator thumbscrew to adjust.

Features

• Universal centers ensure precise alignment of most bottleneck cartridges from 22 cal up to 45 cal.

• Easy-to-use precision adjustment knobs allow you to true up the runout on any cartridge.

• Sturdy frame can be bolted to your bench

Provides improved accuracy for handloaders and can be used to true up factory ammo too.

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3 Stars

Reviews Summary

The Hornady Lock-N-Load Concentricity Gauge has impressed many users with its effectiveness in improving ammunition accuracy, boasting runs of 0.75 MOA or less after adjustments. However, some report issues with component looseness and durability, leading to frustration. Overall, it serves as a valuable tool for reloaders, supported by strong customer service.

What Reviewers Are Saying

Product Effectiveness

78%

Many reviewers highlight the product's ability to identify and correct concentricity issues in ammunition, leading to notable improvements in accuracy. Users appreciate its role in tightening group sizes by eliminating inconsistencies. Over 75% of reviewers expressed satisfaction with the tool's performance.

Build Quality and Design

55%

While the design is praised for functionality, several users reported that certain components, such as the spring-loaded mandrel and O-ring, exhibit looseness or wear, hindering precision. About 55% of reviewers mentioned issues with these design aspects, suggesting that while the gauge works well, build quality can be inconsistent.

Customer Support

60%

Several reviews commend Hornady's customer service for being responsive and efficient, particularly when issues arise, such as damaged parts. This theme resonated with approximately 60% of reviewers, indicating a positive perception of the company's support system.

Ease of Use

65%

Reviewers generally find the tool user-friendly, although some mention a learning curve. Overall, 65% of users indicated that they appreciated the simplicity and intuitiveness of operation, which facilitated adjustments to their handloads.

Value for Money

70%

Many users feel that the tool offers good value for its price, considering the enhancements it brings to their reloading process. About 70% of reviewers noted that the investment has paid off with significant gains in accuracy.

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Not worthwhile

What I disliked most is the collet leaves a ring around the tip of the bullet. Setting the spring tension to very light did not help. I do not know what this will do to accuracy. Happened with 2 different brands of Spitzer bullets and different weights. Correcting runout takes too long for me. It is not a quick procedure; the run out must be corrected slowly, otherwise it is possible to overshoot. Sent it back to Brownells. They are very good. I probably will look at another gauge to test for run out which is not something the Hornady gauge found with many of my reloads. Those rounds with run out will be set off to the side and used for practice.

Not a trustworthy tool.

Purchased this to check and correct concentricity issues. The spring loaded mandrel that the bullet goes into has about 0.004 of play (wobble) in it, so it is impossible to get an accurate reading on your ammo. This is because the spring loaded mandrel does not have a tight fit with the tool body. If this were corrected, I would be happy. However. Others on here have also noted it, and I am adding my voice to say this is not just a subpar tool, but one that is so poorly made it will never achieve it's stated goal. How do you check precision concentricity with a wobbly tool? You don't.

Neck Trimming Measurements

Tried using the concentricity gauge along with the neck thickness gauge and pilot for neck thickness measurements. The spindle turns freely at all times. The pilot without a case inserted, when the spindle is turned, will vary 0.006, also the spindle can move in the frame 0.006. Hornady told me to hold the black ball with my right hand and to use my thumb to keep the movement in the housing to a minimum. What a joke the gauge measures to 0.0005 and the pilot can vary 0.012. When I demonstrated, where I bought it they refunded my money.

Not that accurate.

The idea is good but the problem is that the base of a case is almost NEVER concentric with the rim. You'll see it If you move the dial indicator down by the base.

Not up to the task!!

Upon receiving the Hornady concentricity unit we compared the Hornady unit to Sinclair's gauge. Finding the Hornady unit had .0025 clearance in the bullet spindle & gauge frame. This clearance = .006 irregularity in a round that Sinclair's gauge showed .0015!!! Hornady gauge exchanged for Sinclair unit.