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Rifles, Reloading, Optics, Equipment
Gunsmithing
Tight bolt, flute it?
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<blockquote data-quote="tobnpr" data-source="post: 2015196" data-attributes="member: 68758"><p>Is this a new rifle (under warranty)?</p><p></p><p>Fluting reduces surface contact area so it should help (far as I know, the concept was first introduced by AI on their AW rifles to reduce the possibility of ice freezing up the bolt- not a good outcome in combat). It also provides a way to help shed grit- but IMO the bolt isn't correctly fitted based on your description.</p><p></p><p>NEVER coat in this condition. Depending on the application (benchrest rifles can have less clearance than hunting/combat rifles- you don't want a speck of grit to bind up your bolt!), you want minimum .002-.003 thou clearance in the raceway from the smallest dimension on a hunting rifle. Production receivers usually vary from end to end.</p><p></p><p>Cerakote, properly applied, adds .002 to the bolt (.001 ea side). Heavy-handed spray will lessen clearance more.</p><p></p><p>Assuming you're hunting with this rifle, I'd contact Mauser service- this is not how it should be. They're not inexpensive rifles, and if the bolt is that tight it's very possible it will bind up at the least opportune time. I'd have them replace the bolt with one of correct fit.</p></blockquote><p></p>
[QUOTE="tobnpr, post: 2015196, member: 68758"] Is this a new rifle (under warranty)? Fluting reduces surface contact area so it should help (far as I know, the concept was first introduced by AI on their AW rifles to reduce the possibility of ice freezing up the bolt- not a good outcome in combat). It also provides a way to help shed grit- but IMO the bolt isn't correctly fitted based on your description. NEVER coat in this condition. Depending on the application (benchrest rifles can have less clearance than hunting/combat rifles- you don't want a speck of grit to bind up your bolt!), you want minimum .002-.003 thou clearance in the raceway from the smallest dimension on a hunting rifle. Production receivers usually vary from end to end. Cerakote, properly applied, adds .002 to the bolt (.001 ea side). Heavy-handed spray will lessen clearance more. Assuming you're hunting with this rifle, I'd contact Mauser service- this is not how it should be. They're not inexpensive rifles, and if the bolt is that tight it's very possible it will bind up at the least opportune time. I'd have them replace the bolt with one of correct fit. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Tight bolt, flute it?
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