Parker Chamber

[Richard Mason]

Originally Posted by allen newell

Just get the dam chambers measured. It will eliminate all speculation and give you peace of mind.

That’s my game plan , soon as I get it , I’ll have it measured and look at befor I start shooting it
Thanks

[Phil C]

Thanks guys for the info on Burkhard. I had never knew who he was.

[Parker W.]

There is a high probability it is a 2.5 chamber. The thing is that a modern 2.75” shell fits in a chamber of that size because of the crimp (roll or pie). Shells are measured by the length before loading. That being said, if a 2.75 or 3” plastic shell fits in the 2.5” chamber and is shot the pressure will increase due to the end of the shell causing a constricted forcing cone. Not sure how dangerous that is but to be on the safe side there is nothing wrong with having it reamed to 2.75 for safety. Or if you reload, trim the hull to 2.5” then reload it.

[Mike of the Mountain]

Originally Posted by Parker Walz

There is a high probability it is a 2.5 chamber. The thing is that a modern 2.75” shell fits in a chamber of that size because of the crimp (roll or pie). Shells are measured by the length before loading. That being said, if a 2.75 or 3” plastic shell fits in the 2.5” chamber and is shot the pressure will increase due to the end of the shell causing a constricted forcing cone. Not sure how dangerous that is but to be on the safe side there is nothing wrong with having it reamed to 2.75 for safety. Or if you reload, trim the hull to 2.5” then reload it.

Shell length is the measurement of the shell after firing. A 2 3/4" shell is the length after firing, not before.

[Phil Cloninger]

Good discussion...., just as an added bit of information, I had a 1903 16 ga. 0 frame, VH grade, with Vulcan barrels that was sold as having 2-3/4" chambers.

I had a gunsmith measure the chambers and they were 2-3/4".

A later Research Letter verified that the gun was ordered with the 2-3/4" chambers.

[John Taddeo]

Maybe take a quick look at the home page. Parker FAQs / Collecting/#7 barrel wall thickness. It will explain that wall thickness is quite important at the juncture of the chambers and forcing cone as well as the angle, furthermore the wall thickness is also decreasing from the breech to the muzzle. Just a little food for thought before wielding a reamer to save a little $$ on shells.

[Richard Mason]

Originally Posted by John Taddeo

Maybe take a quick look at the home page. Parker FAQs / Collecting/#7 barrel wall thickness. It will explain that wall thickness is quite important at the juncture of the chambers and forcing cone as well as the angle, furthermore the wall thickness is also decreasing from the breech to the muzzle. Just a little food for thought before wielding a reamer to save a little $$ on shells.

I’ll know with luck over the weekend , it’s in the mail to me to inspect and I’ll measure them then

[John Taddeo]

Variations of a 2 3/4 open hull?? Far right is a 2 1/2 RST..

[Jim Thynne]

Parker was known for short chambered guns, I never had a hammerless steel barreled gun that would not shoot 23/4 inch shells and pattern properly!

[Richard Mason]

Originally Posted by Jim Thynne

Parker was known for short chambered guns, I never had a hammerless steel barreled gun that would not shoot 23/4 inch shells and pattern properly!

That is interesting ,