Right barrel choked tighter

[William Davis]

Looking more carefully at the Parker Letter on 49225

"The requested chokes were RH 250 pellets LH 175 Pellets. "

Low pelllet count for a 10 G, I would expect the load was 1 1/4 oz what size shot did they use to pattern ? Thought Parkers were patterned with # 7

I have a Birmingham Hammer gun choked the same way, tight right barrel more open left. You read it was done for incoming birds, first one longer shot than the 2nd. The Birmingham gun very little difference between the two chokes. On the Parker 250 vs. 175 pellets right much difference. Will get a micrometer out and measure see what the barrel size difference on this gun is

I could see pass shooting tight choke first shot could be good. Was this a common arrangement with Parkers ?

William Davis

[Dean Romig]

There are a fair number of Parkers documented to have been choked similarly. I have a 10 gauge with reversed chokes too.

[William Davis]

Dean,

My calcuation from Hallowells chart 363 # 7 pellets in 1 1/4 oz. 250 right barrel is about 70 % 175 left is roughly 50 %

Parker must have set the chokes with something other than # 7 Or the gun is more open than I think, hard to measure a 10 G with my tools. Give it a try tonight.

William

[Dean Romig]

Like you, I have nothing that will measure 10 gauge barrels. I should probably get something...

[Austin J Hawthorne Jr.]

Dean, How about a 3/4 inch dowel and electrical tape.

[Dean Romig]

I'd really like to measure my bores with a micrometer.

[Chuck Bishop]

Bill, I double checked the order book and the pellets for L&R barrels are correct.

I checked the stock books in this S/N range and they were using #8 shot for all patterning unless it was a special request to use a different size. Tatham shot shows 399 pellets per oz. Parker used a 24" circle at 45 yards in that time period. I would assume Parker used 1 1/4 ounce of shot. Looking at other 10 ga patterning info, the majority of 10ga guns put 200 size 8 shot in the 24" circle. I would assume this was a full choke pattern. Since it's a smaller circle and at 45 yards, I would think the R choke is extra full range and L modified.

Parker used mostly 7 and 8 size shot depending on what they had in stock and when they used either 7 or 8, they stuck with it for quite some time.

[William Davis]

Think I can insert a 8 inch spring inside caliper. Expand until it touches , compress, remove then mike the caliper. Muzzle is easy have a tube mike. Take outside then subtract wall thickness x 2

Will try it in a 12 that has accurate dims recorded see if it matches first.

William

[Mills Morrison]

I have a similar parker myself. Unusual but they are out there