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Sinclair Chamber Length Gage Reviews & Ratings

SINCLAIR CHAMBER LENGTH GAGES

The Sinclair Chamber Length Gauges are designed so the handloader can determine the true length of his rifle's chamber when measuring from the bolt face to the end of the chamber's neck. This measurement will tell you how much excess case length your chamber may have over published trim lengths in reloading handbooks. The Sinclair Gauges are inserted into a fired, unprimed shortened case and then chambered into your rifle. The insert pushes back into the case when it contacts the end of your chamber. You then extract the case and measure the overall length. The gauge is made of 12L14 soft steel so it will not damage your chamber. Step-by-step instructions accompany each gauge. The gauges can be used over and over again. The differences between published trim lengths and the actual length of your chamber can be quite significant. You could be over trimming your cases by .030 inch or more. NOTE: The 22 caliber gauge will not work on thin-necked cases such as the 22 Hornet, 218 Bee, or cartridges based on these cases. The 30 caliber gauge will not work on the 30-30 Winchester. None of the gauges listed will work on tight-necked chambers except for the G-243T. Should not be used in handguns, semi automatic rifles, lever actions rifles and pump action rifles.

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2 Stars

Reviews Summary

The Sinclair Chamber Length Gage is praised for its accuracy and ease of use in precision reloading. Many users report it serves as a reliable tool for measuring chamber neck length, although adjustments and modifications to the case may be necessary. Some reviews highlight quality control issues with certain gauges, including uneven surfaces and thicknesses. Overall, it’s considered a valuable tool despite some shortcomings.

What Reviewers Are Saying

Accuracy & Precision

60%

Many users commend the accuracy of the Sinclair Chamber Length Gage, noting it as a vital tool for achieving precise measurements when reloading ammunition. Users emphasize the importance of knowing the exact chamber length to enhance reloading accuracy, with overall satisfaction in its performance reported at around 60%.

Ease of Use

55%

Numerous reviewers appreciate the straightforwardness of the gauge’s design, describing it as easy to use for measuring chamber neck length. Despite some needing to modify cases for proper fit, the majority find the process manageable and effective. Approximately 55% of reviewers express satisfaction in the user-friendliness of the product.

Product Quality Issues

30%

Several reviews highlight quality control problems with certain gauges, particularly uneven surfaces and inconsistent dimensions that hinder performance. Such issues have led some users to modify their gauges for improved accuracy, making this a common complaint noted by roughly 30% of reviewers.

Modification Requirements

40%

A recurring theme involves the necessity for users to trim and modify cases to ensure the gauge fits accurately. Many reviewers discuss their experiences with adjusting case necks, suggesting that precise instructions could enhance user experience. These modification-related comments were found in about 40% of reviews.

Value for Money

50%

The Sinclair Chamber Length Gage is generally viewed as a worthwhile investment among reloaders, with many reviewers indicating that it provides good value for the cost. Users recognize its utility in achieving optimal chamber measurements, resulting in favorable comments from nearly 50% of reviewers who discuss pricing and effectiveness.

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Useful tool

There are many tools to tell you the distance from the cartridge's base to the bullet's ogive, but this tells you the maximum length of the chamber from the cartridge's base to the end of the neck. The only drawback was that I had to trim the neck far more than the instructions suggest, so be aware that if the bolt doesn't close, don't force it, you'll need to trim the neck further. When done, though, this is a useful tool for determining this dimension, which is a function of the reamer used to chamber your barrel.

I think it would be better in brass

It works as designed, although pushing a steel plug into the chamber of a fine rifle seems a little "aggressive". Yes, they are supposedly made from soft steel, but I don't see why they couldn't be made of brass. And you can use them in a semi-auto rifle. However, it's very much a trial-and error affair. Since you don't have the camming action of a bolt-action, you need to push the gage into the case a little at a time by hand until you can get it to chamber. That's not extremely precise, but it gets you close. I did a Garand this way.

Useful but could be better

Other than the top (flat surface) being unnecessarily too thick, this item was helpful determining the chamber length. If the excessive length were reduced, less case neck would need to be trimmed. If Sinclair pays attention to these reviews, this problem could easily be resolved.

by Bob on February 02, 2015

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Works Great

Everything was exactly as described. The only thing I wish had been included was better instructions on turning down a case neck, or even selling a modified case to use with these already turned down to the right dimensions. It was no issue doing so, but a little more clear instructions would have been nice.