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02-19-2020, 09:04 AM | #3 | ||||||
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Dave, thank you. Can you help me with determining if I have measured the bore correctly? I can shine a light into the breech and see a definite ridge. I can also insert a very thin metal blade into the breech and it hits this ridge at a depth of 2-3/4”. After reading many posts concerning chamber depth measuring methods am I accurately measuring the chamber depth? I have been using a 2-1/2” RST shell with 5/8” of shot and assume that if I use a 2-3/4” shell with 7/8 oz of shot I would improve my chances of hitting quail.
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02-19-2020, 09:14 AM | #4 | ||||||
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Be careful. A chamber measuring 2 3/4 is for a 2 1/2" shell. Remember - Shell length is measured as unfired. When it is shot, it opens up about another 1/4"
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"Striving to become the man my dog thinks I am" |
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02-19-2020, 09:35 AM | #5 | ||||||
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Chamber depth
John, thank you for your response. Am I correct in assuming the bore is 2-3/4” based on the method I used to measure it? Many other posts I have read on this subject suggest it is very difficult to determine chamber depth.
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02-19-2020, 09:38 AM | #6 | ||||||
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I believe that is a misstatement.
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"Life is short and you're dead an awful long time." Destry L. Hoffard "Oh Christ, just shoot the damn thing." Destry L. Hoffard |
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02-19-2020, 09:45 AM | #7 | ||||||
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John, thank you for your comment but now I am even more confused.
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02-19-2020, 09:49 AM | #8 | ||||||
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A 2 3/4 inch shell when loaded measures approximately 2 1/2 inches. When shot it measures 2 3/4 inches. Parker chambered their guns 2 5/8 inches to shoot 2 3/4 inch shells. The thought was that the 1/8 inch overlap created a better gas seal.
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"Life is short and you're dead an awful long time." Destry L. Hoffard "Oh Christ, just shoot the damn thing." Destry L. Hoffard |
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02-19-2020, 10:09 AM | #9 | ||||||
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Charlie, Galazan (Connecticut Shotgun) sells a combination chamber length and choke gauge tool that is fast, easy to use and 100% accurate. It handles all gauges from 10 to .410. Its a wise investment at $45. There may be other less expensive ones out there too.
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02-19-2020, 10:17 AM | #10 | ||||||
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If I encountered a shoulder 2-3/4” from the breech using the very simple method of inserting a small metal ruler, have I accurately determined that my 28 ga Parker has a 2-3/4” chamber? Based on this measurement can I use a 2-3/4” shell which would allow me to shoot 7/8 oz of shot instead of 5/8 oz of shot?
Why have so many members comments for years regarding chamber measurement methods make it sound complicated IF the manner by which I determined chamber depth is accurate? |
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