Wall thickness relative to frame size

[Dean Romig]

That may not have been the result of boring but rather the result of striking.

What is the length of the choke tapers?



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[mobirdhunter]

Originally Posted by Bill Murphy

.020 "past the forearm" is definitely a sign that the gun has been fooled with. The scariest gun I have ever examined is the probably unique #1 frame ten gauge DH grade gun. It hasn't blown up yet, but the chamber walls are thin beyond description. It is factory original and is in the order book. It is #71767 as I recall. Look it up.

Just curious, Bill, if you remember, what was the wall thickness that you describe here as "thin beyond description"?

[Mills]

Originally Posted by Dean Romig

That may not have been the result of boring but rather the result of striking.

What is the length of the choke tapers?



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Several inches, but I did not measure exactly. Seemed really long.

[Dean Romig]

When the choke taper gets up into the 6+" range I'll admit it does seem long. But that is very common on some Parkers.





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[charlie cleveland]

mills i believe that weight had something to do with thickness of the barrel...my light weight guns all have thin barrels....have not measured them but you can tell by eye that they are thin....charlie

[Mills]

Originally Posted by Dean Romig

When the choke taper gets up into the 6+" range I'll admit it does seem long. But that is very common on some Parkers.





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Could be 6, but I don't know for sure. One gun is 1889 and the other is 1906 or so. Very similar, despite basically two different Parker eras.

The variations in Parker barrels amazes me. They seemed to really know what they were doing though

[Mills]

Originally Posted by charlie cleveland

mills i believe that weight had something to do with thickness of the barrel...my light weight guns all have thin barrels....have not measured them but you can tell by eye that they are thin....charlie

You are right Charlie. It seems if they wanted to lighten the weight of gun, they made the barrels thinner.

[Bill Murphy]

We did not measure the wall thickness of 71,767.

[mobirdhunter]

This information probably just confirms the obvious, but I have a GH 12 that has 30 inch Damascus barrels and is built on the #1 frame. It's unstuck barrel weight is 3 lbs 9 oz and the barrels weigh 3 lbs 2 oz. The gun weighs 7 lbs .55 oz. The chokes are .040 in each barrel and are about 4 inches long each. The minimum wall thickness at 9 inches from the breech is .047 for both barrels. This gun letters as weighing 7 lbs.

The barrel strikers could work wonders! Yes, these are factory guns, but when you look at the individual guns, they are much more like custom made than one would think at first glance.

[Bill Murphy]

Dean, we don't know, by measurement, what the chamber wall thickness is in the #1 frame ten gauge, #71767. However, this measurement can be calculated by knowing the pin separation and breech dimension of a #1 frame gun. The formula would be to know the breech dimension, subtracting the pin separation, dividing by two. Maybe another known dimension would be involved, but I think I gave us enough to calculate the wall thickness of the breech, at least at the outside.