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Old 05-23-2017, 04:45 PM
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Custom barrel for 40X ??????



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I just received the barrel which I purchased from frg22 here on RFC.

This is how he described it it: "Barrel: the barrel came off a rimfire benchrest rifle it is a straight taper .750 for about 22" tennon and thread pitch seem to be from a 40x rimfire but not sure."

What I determined today is: The barrel is 25" long. A magnet will stick to it. It is approximately 0.875" at the muzzle, 0.77" at the middle of the barrel and 0.79"at the rear before thickest point of 1.206", 1" at the face of the chamber. It is curious to me being tapered from the muzzle, thicker to thin. It is probably obvious I know nothing about fancy benchrest rifles or barrels. I am sure I didn't give you all the proper info in the proper sequence. But any knowledge on this you could share, I would appreciate. I slugged the barrel and it was very tight with only two groves on the bullet opposite each other. Here are some pictures. Bob

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Old 05-23-2017, 05:47 PM
92lowrider
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Benchmark 2 groove reverse taper, these were very popular in benchrest a few years back. Yes it appears to be threaded for a 40X
Probably a 1 in 17" twist but they also came in 16.5 twist.
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Old 05-23-2017, 05:50 PM
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By the way 416 stainless will hold a magnet

Last edited by 92lowrider; 05-23-2017 at 05:52 PM.
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Old 05-23-2017, 10:47 PM
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I have an old Gene Davis smithed benchrest 40X with a barrel contour almost exactly like that. It is a Douglas barrel.
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Old 05-24-2017, 08:27 AM
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Should be a great shooting barrel. Had one similar on a 40X and it was miles ahead of the factory barrel in accuracy.

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Old 05-26-2017, 02:44 PM
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I've had a couple of Shilens with the reverse taper. Both had tuners though.

Last edited by butchlambert; 05-27-2017 at 08:55 AM.
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Old 05-26-2017, 10:51 PM
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I also bought a 40x barrel that was turned and has almost exactly the same profile now. It is in 22 short, was told it was a LR barrel.
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Old 05-27-2017, 12:05 PM
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Thanks for all the input. I think 92lowrider has nailed it. Bob
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