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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New barrel maker with new technology
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<blockquote data-quote="Dzaw" data-source="post: 144819" data-attributes="member: 7794"><p>I've been on the horn with Bartlein. I can't say anything one way or another about accuracy yet, but I can say that their new machines are quite versatile.</p><p></p><p>As I mentioned in another thread, they're willing ti tackle the idea of cutting polygon rifling. This thought was quite abhorrant to some other (who will remain nameless) cut barrle maker, as his machine (or maybe just his will to get involved in the tooling and processes necessary) was less than up to the task.</p><p></p><p>Ironically enough, during my conversation with Scott DeVanna (a top metallurgist at Crucible Steel) he brought up Bartlein barrels on his own, saying that he had heard a lot about their new machining and thought that there was a lot of promise for honest advances there.</p><p></p><p>I'm going to try and contact Bartlein again and see if they might be willing to offer 174-SXR as an upgrade option. While it is harder and more wearing on tools, the cost to pay for their tooling seemed rather reasonable, and even coupled with the incresed cost of the material, you're only looking at probably a $100 to $150 increase in the price of the final product while still protecting their bottom line.</p><p></p><p>As far as protecting the throat area... Plasma Nitriding should be able to do exactly that with some very promising results. This process is used in hot work tool steels to protect them from more heat checking and carburizing than our barrels will ever see, and it's quite effective! The plasma process doesn't roughen the surface like other methods of nitriding, and if this area is made slightly under diameter, it can still be polished to s proper mirror sheen afterwards.</p><p></p><p>I am waiting on a callback from northeast coatings to talk about plasma nitriding. Their literature indicates 17-4 type steels will take the treatment well, but I want to be sure they're set up to do the inner diameter of a long tube.</p><p></p><p>If not, I do know that there are a couple of others who are set up for this, it's just a matter of finding a good company with a reputation of precise work.</p></blockquote><p></p>
[QUOTE="Dzaw, post: 144819, member: 7794"] I've been on the horn with Bartlein. I can't say anything one way or another about accuracy yet, but I can say that their new machines are quite versatile. As I mentioned in another thread, they're willing ti tackle the idea of cutting polygon rifling. This thought was quite abhorrant to some other (who will remain nameless) cut barrle maker, as his machine (or maybe just his will to get involved in the tooling and processes necessary) was less than up to the task. Ironically enough, during my conversation with Scott DeVanna (a top metallurgist at Crucible Steel) he brought up Bartlein barrels on his own, saying that he had heard a lot about their new machining and thought that there was a lot of promise for honest advances there. I'm going to try and contact Bartlein again and see if they might be willing to offer 174-SXR as an upgrade option. While it is harder and more wearing on tools, the cost to pay for their tooling seemed rather reasonable, and even coupled with the incresed cost of the material, you're only looking at probably a $100 to $150 increase in the price of the final product while still protecting their bottom line. As far as protecting the throat area... Plasma Nitriding should be able to do exactly that with some very promising results. This process is used in hot work tool steels to protect them from more heat checking and carburizing than our barrels will ever see, and it's quite effective! The plasma process doesn't roughen the surface like other methods of nitriding, and if this area is made slightly under diameter, it can still be polished to s proper mirror sheen afterwards. I am waiting on a callback from northeast coatings to talk about plasma nitriding. Their literature indicates 17-4 type steels will take the treatment well, but I want to be sure they're set up to do the inner diameter of a long tube. If not, I do know that there are a couple of others who are set up for this, it's just a matter of finding a good company with a reputation of precise work. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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New barrel maker with new technology
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