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Joined: Mar 2006
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Campfire Ranger
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OP
Campfire Ranger
Joined: Mar 2006
Posts: 19,509 |
I have a Remington M7 stainless in 6x45. I'd like to have it rebarreled with a faster twist (1/7 or 1/8) stainless barrel. I'm thinking of 20" finished length with a contour slightly heavier than sporter at the muzzle. The problem for me is that I get a bit lost when looking at contours, shank lengths, etc. among different brands. Is there not an industry standard on contours and tapers?
I would imagine that I'll get recommendations tobspeak with my gunsmith, but I don't have one yet. What's the simple way to settle on a barrel that fits my criteria?
Last edited by bruinruin; 09/13/22.
4 out of 5 Great Lakes prefer Michigan.
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Joined: Jun 2004
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
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There is no standard. Similarities yes, but no standard. I'm not clear on what this means: with a contour slightly more than shorter at the muzzle
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Campfire Tracker
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Campfire Tracker
Joined: Jun 2004
Posts: 7,203 Likes: 6 |
Sometimes, translation isn't easy! The answer is to use a gunsmith who doesn't mind altering a contour to give you what you want. GD
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Joined: Mar 2006
Posts: 19,509
Campfire Ranger
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OP
Campfire Ranger
Joined: Mar 2006
Posts: 19,509 |
There is no standard. Similarities yes, but no standard. I'm not clear on what this means: with a contour slightly more than shorter at the muzzle I typed it as sporter, but apparently my phone thinks it knows better than I do.
4 out of 5 Great Lakes prefer Michigan.
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Joined: Jun 2004
Posts: 44,908 Likes: 13
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,908 Likes: 13 |
You can look at a given barrel maker's contour chart. There will be a diameter dimension for the muzzle and another for the transition area where the shank is stepped down. There will be a linear dimension between the two. If you calculate the difference of the two diameters and then divide that difference by the linear dimension you'll have the taper rate in inches per inch. You can use that to figure what diameter the barrel will be at a given finished length.
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Joined: Jun 2004
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Campfire Tracker
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Campfire Tracker
Joined: Jun 2004
Posts: 7,203 Likes: 6 |
Comparing a Shilen #3 to a Douglas #3, you'll find the Douglas to be larger at the muzzle, depending on the length. My typing is being interrupted by that stupid dental implants ad, so I have no more to say except, to hell with it! GD
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Joined: Jan 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2001
Posts: 58,679 Likes: 47 |
Go 7" RPM at 19" and massage guts to eat at least 2.650" COAL. Hint. Baby Montucky chambered same,with OEM duped contour and shortened shank. Hint. Send it to The Kali Kid and never look back. Hint. Thank me later. Hint................
Brad says: "Can't fault Rick for his pity letting you back on the fire... but pity it was and remains. Nothing more, nothing less. A sad little man in a sad little dream."
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Joined: Aug 2003
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2003
Posts: 39,389 Likes: 62 |
You can look at a given barrel maker's contour chart. There will be a diameter dimension for the muzzle and another for the transition area where the shank is stepped down. There will be a linear dimension between the two. If you calculate the difference of the two diameters and then divide that difference by the linear dimension you'll have the taper rate in inches per inch. You can use that to figure what diameter the barrel will be at a given finished length. I was told there would be no math.
Me
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Joined: Nov 2005
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Campfire Tracker
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Campfire Tracker
Joined: Nov 2005
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Find a good local custom gun maker and explain what you want. You will want to specify an approximate finished length, shank length, muzzle diameter and an approximate finished weight etc. He will know what to order.
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Joined: Mar 2006
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Campfire Ranger
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OP
Campfire Ranger
Joined: Mar 2006
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Alrighty, how many grooves do I want? Do groove shoulders create weak spots in a jacket?
4 out of 5 Great Lakes prefer Michigan.
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Joined: Jan 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2001
Posts: 58,679 Likes: 47 |
Dots ONLY get connected,by Starting At The Fhuqking Start. Hint.
Sooooooo...what are you gonna do for a stock? Make/Model/Material?!? Hint.
Why a contour bump? Hint.
How are you going to feed it? OEM guts or DBM? Hint.
What are doing for base/rings/glass? Hint.
With them particulars,balance and handling can be pinpointed. Hint.
What's your budget and how long do you want this to take? Hint...................
Brad says: "Can't fault Rick for his pity letting you back on the fire... but pity it was and remains. Nothing more, nothing less. A sad little man in a sad little dream."
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