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Posted: 3/16/2014 10:38:04 PM EDT
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thought everyone might like the look of this... special project for a friend i though it turned out pretty nice..
LR-308 18 INCH MID 416 STAINLESS 7.62X51 NATO 1:10 TWIST 
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Is there anything that would cause you concern for the fluting in the barrel shank so close to the chamber?
I only ask because I have wondered this myself, namely, "What is the yield strength of the steel in that area, and what is the minimum OD I can go to over the chamber?" Most barrel profiles have substantial OD in that area, and I have read something about it in very technical gunsmithing books from the 1950's. Will have to do some digging for the reference. |
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Is there anything that would cause you concern for the fluting in the barrel shank so close to the chamber? I only ask because I have wondered this myself, namely, "What is the yield strength of the steel in that area, and what is the minimum OD I can go to over the chamber?" Most barrel profiles have substantial OD in that area, and I have read something about it in very technical gunsmithing books from the 1950's. Will have to do some digging for the reference. Given the barrel profile on magnum caliber NULAs and Montanas, I wouldn't worry too much. |
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Given the barrel profile on magnum caliber NULAs and Montanas, I wouldn't worry too much. Quoted:
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Is there anything that would cause you concern for the fluting in the barrel shank so close to the chamber? I only ask because I have wondered this myself, namely, "What is the yield strength of the steel in that area, and what is the minimum OD I can go to over the chamber?" Most barrel profiles have substantial OD in that area, and I have read something about it in very technical gunsmithing books from the 1950's. Will have to do some digging for the reference. Given the barrel profile on magnum caliber NULAs and Montanas, I wouldn't worry too much. NULA Rifles have plenty of barrel OD in that area, before going down to a featherweight taper. They have ~1.250" to 1.500" of straight OD before tapering. 
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NULA Rifles have plenty of barrel OD in that area, before going down to a featherweight taper. They have ~1.250" to 1.500" of straight OD before tapering. http://i131.photobucket.com/albums/p301/lscott_06/NULA002.jpg Quoted:
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Is there anything that would cause you concern for the fluting in the barrel shank so close to the chamber? I only ask because I have wondered this myself, namely, "What is the yield strength of the steel in that area, and what is the minimum OD I can go to over the chamber?" Most barrel profiles have substantial OD in that area, and I have read something about it in very technical gunsmithing books from the 1950's. Will have to do some digging for the reference. Given the barrel profile on magnum caliber NULAs and Montanas, I wouldn't worry too much. NULA Rifles have plenty of barrel OD in that area, before going down to a featherweight taper. They have ~1.250" to 1.500" of straight OD before tapering. http://i131.photobucket.com/albums/p301/lscott_06/NULA002.jpg Correct. and the taper amount/location is akin to where the fluting is on the barrel in the OP. I betcha that fluting depth is close to (if not the same as) the OD of those NULA barrels. there's nothing about the OP's barrel that would make me worry, especially with something like a .308 or similar, considering what a NULA, FWT 70, or remington MR profile looks like in a magnum chambering. |
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yes there are many variables with loads, bolt, shooter etc.. but most of my barrels will do MOA or better under the right conditions.. ill say i never had a return for poor accuracy and most customers call later saying they the are amazed how they shoot Outstanding........ |
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Goatboy, I was going to send you a PM, but your inbox is full.
--------- I love the way your barrel looks. Would you tell me a little about barrel making? For example, if I google 'barrel blanks,' I see that they are already round, *and* they already have a hole down the center. Is that how you buy them? Then, you add rifling, threading, chamber it, flute it, etc? Or, am I looking at the wrong thing? Do you drill the holes down the middle, too? Thank you! |
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Barrel makers like Krieger of Bartlein make a rifled blank of whatever caliber and twist you desire for the cartridge you want.
Generally, a basic blank is 28" long and 1.250" in diameter, though most makers offer various profiles off the shelf. So, in this case it's a .30 cal 1-10 twist blank and then that was profiled, fluted, threaded for an extension, chambered, and then finished. |
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Barrel makers like Krieger of Bartlein make a rifled blank of whatever caliber or twist you desire for the cartridge you want. So, in this case it's a .30 cal 1-10 twist blank and then that was profiled, fluted, threaded for an extension, chambered, and then finished. The OP buys that, and finishes it. I see, thanks mate. Also, about Krieger.. Where do they get their metal? Do they take a cast piece of rectangular steel, and turn it - or what? |
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Goatboy, I was going to send you a PM, but your inbox is full. --------- I love the way your barrel looks. Would you tell me a little about barrel making? For example, if I google 'barrel blanks,' I see that they are already round, *and* they already have a hole down the center. Is that how you buy them? Then, you add rifling, threading, chamber it, flute it, etc? Or, am I looking at the wrong thing? Do you drill the holes down the middle, too? Thank you! Sorry I will clean it out.. |
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chamber alignment certainly seems to be one of the major issues with many barrels mass-produced from their blanks, at least on the AK side of the house.
Glad to see someone proving that they can be a useful item, provided someone who knows what's up is handling them. |
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The OP buys that, and finishes it. I see, thanks mate. Also, about Krieger.. Where do they get their metal? Do they take a cast piece of rectangular steel, and turn it - or what? Quoted:
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Barrel makers like Krieger of Bartlein make a rifled blank of whatever caliber or twist you desire for the cartridge you want. So, in this case it's a .30 cal 1-10 twist blank and then that was profiled, fluted, threaded for an extension, chambered, and then finished. The OP buys that, and finishes it. I see, thanks mate. Also, about Krieger.. Where do they get their metal? Do they take a cast piece of rectangular steel, and turn it - or what? They get round bar stock from Crucible. They do cryo treating in house so their tools last longer. |
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Do you use removable pilot reamers? Quoted:
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Yes I use floating reamer holders on both rough and finish that float in 3 directions as well as special thru headstock coolant flush that I designed myself for my machines Do you use removable pilot reamers? yes, with solid carbide reamers |
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