Gas Port Data

On a whim, I whipped up this form, for those of y'all that know the gas port of your barrels: https://goo.gl/forms/gxSiVMP0jITBxV2v1

It will auto-populate this spreadsheet: https://docs.google.com/spreadsheets...it?usp=sharing

I will need to periodically clean up the formatting, but it should be usable even if I don't.

Self-measuring variables aside, there is a good deal of variation amongst same manufacturer, same barrel length, same gas length.

Thanks for putting it together. Any specific drivers for why you're compiling the data?

That's cool. Thanks.

Quote:

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Originally Posted by StraitR

Self-measuring variables aside, there is a good deal of variation amongst same manufacturer, same barrel length, same gas length.

Thanks for putting it together. Any specific drivers for why you're compiling the data?

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Sons of Liberty Gunworks has been keeping gas port data on barrels passing through their shop for a few years. Their data supports StraightR's statement.

Might be worth giving them a call if you are looking for something specific.

Quote:

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Originally Posted by StraitR

Any specific drivers for why you're compiling the data?

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I just want to surpass my hero: rob_s, and his Chart.

Other than that, not really, just idle data gathering. I'm personally mostly done with ARs.

Bump.

Gas port data alone is nearly useless. You need bore taper (if any), bore ID, gas-block and gas-tube interface data, etc.

Currently, I am running 0.0735" (pin-gauged by me) on a 14.5" middy. Without the details of my bore dimensions and other data though, this data is moot.