So would it be 2 1/2?
Chamber size
Chamber size
Could someone please educate me? I just bought this 1908 A model. Bought a set of chamber gauges that just arrived today. The gauge goes in and stops between 2 1/2 and 2 3/4.
So would it be 2 1/2?![Image]()
So would it be 2 1/2?
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Researcher
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Re: Chamber size
It is a 2 5/8-inch chamber which was intended for 2 3/4-inch shells. Back in the day several of the North American manufacturers held their chambers a bit short with the theory that the mouth of the shell casing extending an eighth of an inch into the forcing cone gave a better gas seal. The Remington era Parker specification sheets which were reproduced in The Parker Story show this.
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Silvers
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Re: Chamber size
Dave is correct on the better gas seal which helped keep powder gasses from disrupting the pattern. That was with paper shells, fiber wads and bare shot scrubbing against the bores.
More on the practical side for present day shooters: that's not much of a problem with modern plastic shotcups that obturate/seal and protect the shot through the bore run. Also, plastic hulls have thinner walls than old time paper hulls and thus the 1/8-inch "intrusion" of plastic hulls into the forcing cone is of even less consequence as regards pressure. That's with 2-3/4" shells in a 2-5/8" chamber. frank
More on the practical side for present day shooters: that's not much of a problem with modern plastic shotcups that obturate/seal and protect the shot through the bore run. Also, plastic hulls have thinner walls than old time paper hulls and thus the 1/8-inch "intrusion" of plastic hulls into the forcing cone is of even less consequence as regards pressure. That's with 2-3/4" shells in a 2-5/8" chamber. frank
Aan