Look at the last post on page one of this thread and you will find Joe's measurements taken on this gun.

Dean, go back to page one and scroll down. I profiled both barrels at three inch increments, giving the minimum and maximum readings at each location as I measured around.

Brian, I have not ordered a letter but intend to do so.

I see it now. Apologies.

.021" at 12" from the breech seems a bit borderline and a lot of folks would never shoot a gun like that. I have shot a GH 12/30" with .019" at about that distance from the breech and I always shot RST shells in it, though I have no idea what kind of loads previous owners shot in it. I have since retired the gun but only because of severe dents I caused in the right barrel. It too was a 1-frame gun.





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Aren't ideal minimum dimensions .100 plus in front of the chamber and .040 plus at 9". Doesn't pressure drops off very fast after 9" and wall thickness past 12" is more a matter of sensitivity to denting?

'Rule of thumb' measurements are something like that.
I'm sure 'proof house' measurements are similar but more definitive.





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And I was concerned about my light weight 10 where the tubes are just over 20 thousands right before the chokes

Though I have none to measure I suspect this Parker is struck similar to many English guns chambered for the short 2" hull. Intended for light payloads and offering a 12 gauge substitute to the then rarely seen 20 gauge.

Joe your gun is a very interesting and excellent example of what Parker would do to satisfy an order. Personally I would shoot your gun without hesitation with low pressure ammunition. Thanks so much for sharing and adding to our knowledge. Craig Larter

Joe,

I'm really not surprised at the wall thicknesses on these barrels. With an unstruck weight of three pounds they where very light from the get-go. They had to get the weight from somewhere to make a 12ga this light.

Just shoot the appropriate ammo in it and appreciate it for what it is.

Yes, I plan to shoot it with my 7/8 oz ammo, loaded with Clays, a fast burning powder which will keep pressures down a few inches up the bores. However, gun is choked about .040 in each barrel and is also struck thin at the muzzles so opening chokes is not a viable option. (Ouch! I'm a quail hunter)

Yesterday I ordered a research letter. Might be interesting to see what nut had this gun built in 1893.

The barrels have been sent off for a gentle B&W refinish. Not going to need any striking or heavy sanding so shouldn't lose measurable thickness. Then I'm going to have my 30" widowed barrels fitted to it. The wood and action are in superb condition with a lot of faded color. With the longer barrels it's going to weigh right at 6 3/4 pounds and the chokes can be opened to something more reasonable.

Question for y'all: would it be unethical to renumber the 30" barrels to the action? They came from an 1895 GH and also are 3 iron Crolle.