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Joined: Jan 2002
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Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,386 Likes: 1324 |
I highly recommend the 6" flexible scale method. You cannot accurately "Feel" the start of a normal cone, but you can hold the barrels up to a light source, not overly bright though, & looking through the bore measure to the shadow line keeping the scale along the inner wall & where you can see it. For those unaccustomed to using these handy little measuring "sticks", there is nothing special about the fact that it is flexible, for measuring chamber lengths. That is just a common way of referring to the little stainless steel measuring scales. Flexibility in it is not a requirement for measuring chamber lengths. SRH
May God bless America and those who defend her.
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Joined: Dec 2001
Posts: 12,743
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 12,743 |
You are absolutely correct Stan. I refer to them that way because as long as I am in my everyday clothes & not my "Sunday go-to Meeting" duds I have a 6" flexible Machinist scale stuck in my left front shirt pocket. Actually, the one I am carrying at present is not of Machinist quality, but a General brand I picked up at Home Depot. It's plenty good enough to measure chamber lengths.
When I was actively employed as a Machinist it was always a Starrett with 16R graduations. One side was graduated in 32nds & 64ths with the other side having 50ths & 100rds. This General only has 32nds & 64ths with back side having a decimal equivalent chart. Browne & Sharpe was generally my preferred brand but for some reason, they did not offer this 16R graduation on their scales so I chose the Starrett.
Miller/TN I Didn't Say Everything I Said, Yogi Berra
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Joined: Jan 2002
Posts: 5,954 Likes: 12
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,954 Likes: 12 |
Chamber length is pretty much a moot point in this case. 2 3/4" chamber length would not, I repeat, not, be license to put normal/common OTC loads through it. ON the other hand, 2 1/2" chamber does not preclude the use of properly assembled lighter shot loads at lower velocities with lower chamber pressure in 2 3/4" cases. RST et al probably have loads suitable for this gun.
Consider this gun an elderly gentleman due your respect. 3/4 oz loads work hunkey-dorey in 12 bore guns; I see no reason to believe they would not be a good starting point for an 1150 fps load with 7000 psi chamber pressure.
Just for grins, BV2-OQ7-CC6 = $1031. If there are no unseen/undescribed/unidentified "warts" this looks like a pretty good deal.
DDA
Last edited by Rocketman; 02/19/19 11:36 PM.
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Joined: Jan 2002
Posts: 13,386 Likes: 1324
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,386 Likes: 1324 |
Understand your point, Don. But, since the OP asked for info on how to determine chamber length I (we) was addressing that particular query.
Did you not mean to say, in your last sentence, "they would not be a good starting point" ?
SRH
May God bless America and those who defend her.
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Joined: Jan 2002
Posts: 5,954 Likes: 12
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 5,954 Likes: 12 |
Understand your point, Don. But, since the OP asked for info on how to determine chamber length I (we) was addressing that particular query.
Agree you all fully answered the OP's question. I was only concerned the OP might assume 2 3/4" chambers were automatically OK for modern shells.
Did you not mean to say, in your last sentence, "they would not be a good starting point" ?
Yes I did and have made said edit. Thanks for the eagle eye.
SRH
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Joined: May 2010
Posts: 1,534 Likes: 95
Sidelock
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Sidelock
Joined: May 2010
Posts: 1,534 Likes: 95 |
Does it state a shot load ? 1&1/8oz =2&1/2" .
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Joined: Jan 2002
Posts: 7,715 Likes: 114
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 7,715 Likes: 114 |
Funny. Miller carries a 6" machinist scale from the days of his employment. I do too. My employment was lawyering and I needed the scale daily to accurately interpret land surveys and building plans. I still have mine as well, but thankfully use it now for chamber measuring...Geo
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Joined: Nov 2014
Posts: 255 Likes: 3
Sidelock
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OP
Sidelock
Joined: Nov 2014
Posts: 255 Likes: 3 |
I own myself a 16 gauge Greener,the ideal Grouse gun, 26" barrels 5 3/4 lb., made in 1897. I bought it at Safari Outfitters decades and decades ago, and I've shot high brass loads through it without any problem. Except from recoil, it's a light gun and kicks your arm off with heavy loads. 16 gauge Greener
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Joined: Nov 2014
Posts: 255 Likes: 3
Sidelock
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Sidelock
Joined: Nov 2014
Posts: 255 Likes: 3 |
Rocketman,
Have you ever read that series of articles in DGJ in which Sherman Bell tested a large number of Damascus-barrel shotguns with heavy loads and even with overloads?
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Joined: Nov 2014
Posts: 255 Likes: 3
Sidelock
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OP
Sidelock
Joined: Nov 2014
Posts: 255 Likes: 3 |
Thanks to everyone, btw, for the information and replies.
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