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> Foster Manson reamer
Foster Manson reamer
@ 01:54 pm (GMT) |
Rob BirdCan the reamer be used on existing rifles or is it exclusively for use on a new barrel?I tried searching for the topic but came up with no results, so apologies if this has been covered. Thanks. p.s. Just ordered the whole set of books, looking forward to trying to force more info into my aging brain! |
Replies
@ 01:21 pm (GMT) |
Lane SalvatoRe: Foster Manson reamerRob,Of course I defer to Nathan's advice 100% of the time but if the barrel is in good shape and there is nothing wrong with the Lans the FMR can certainly be used just like any other. It would be good to make sure through your gunsmith that the barrel is worth using and has the right contour for the work at hand and the caliber before you spend any money. Hope it goes well! |
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@ 02:38 pm (GMT) |
Rob BirdRe: Foster Manson reamerThanks, Lane! I wasn't sure if the reamer was meant to create headspace that is smaller in any way than what would be on an existing rifle, therefore making it impossible to change an existing chamber. I'm considering either a Zastava M70 or maybe a Husqvarna 640/1640 in 30-06.So are we talking about the "standard finishers/roughers" in the first few pages of the Manson catalog? https://mansonreamers.files.wordpress.com/2020/02/january-2020-catalog-med-file-1.pdf[b] |
@ 03:57 am (GMT) |
David LenziRe: Foster Manson reamerCan you run a reamer in an existing chamber? Maybe. Assuming you're reaming to larger dimensions all around, then (theoretically, at least) you can do so. Taking a look at the prints for the reamer used to cut the chamber and the reamer you intend to use should clarify.As a general thing, if you're going to re-cut the chamber you'll need to set things back...by whatever amount the barrel will handle and your smith is comfortable with. Nathan has a few videos out there suggesting a 22" length for .308, as an example, so that you can set it back and re-chamber rather than re-barrel. |
@ 07:50 am (GMT) |
Nathan FosterRe: Foster Manson reamerHi Rob, sorry I somehow missed this one. Per chance, it also ties into the post that Scott just made regarding inherent accuracy.The FMR reamers cannot be used over an existing chamber as the dimensions are generally tighter through the neck / throat in order to promote better accuracy. The lead angles are also different. Ideally, one should dock the barrel by a neck length (or slightly more) just to make sure the chamber is cleaned up. |
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@ 11:50 am (GMT) |
Rob BirdRe: Foster Manson reamerIs cutting the barrel back more economical than rebarreling? |
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@ 11:16 pm (GMT) |
Rob BirdRe: Foster Manson reamerAlso, in your PDF about the reamers, you show photos of a 30-06 that was stringing on target, but tightened up after using the FM reamer. Does that mean you re-barreled it/docked the barrel? |
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@ 12:14 pm (GMT) |
David LenziRe: Foster Manson reamerRob -Generally, cutting a new chamber is more economical. The reason: when you rebarrel a rifle you pay to have the barrel cut and chambered and you pay for the blank. In other words, you’re going to pay to have either the existing barrel cut or the blank cut, but the smith will put the work in either way. You might catch a break on the machine work, might not. As stated, it’s worth making sure you’ve got a “keeper” barrel before dropping something like 300 USD to have it done up. Another 300-400 will get you a big name blank if you’re stateside. |
@ 01:08 pm (GMT) |
John D. Hays - New MexicoRe: Foster Manson reamerDavid’s advice is sage. I do computer work and when someone brings me a problem PC that is more than a three years old I try to have them buy a new computer. They can pay me a hefty amount to fix it, but they will end up with a 3-year old computer,out of warranty. I charge the same amount to fix the old or configure the new. Unfortunately, we live in a world now where the cost of skilled labor is dear. The cost-benefit equation has changed from when I was young. I throw away things now that I could easily fix. That rumbling sound is my father rolling in his grave. Back then we never threw away nothin’ |
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@ 01:19 pm (GMT) |
Rob BirdRe: Foster Manson reamerI hear you John. I often calculate poorly and repair old stuff. But when it comes to a barrel, I'm gonna go new! |
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