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Tennessee Gun Owners Forums
Rifles
Rimfire accuracy...
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<blockquote data-quote="DaveTN" data-source="post: 5694043" data-attributes="member: 3052"><p>I'm not a gunsmith and I have never reamed a rifle chamber, But I'm a Toolmaker that has reamed plenty of critical tolerance holes. A reamer needs to cut. If it isn't doing so, it can cause an oversized hole. I assume the chamber is roughed out prior to a finish reamer? The drill size or a roughing reamer is critical, too much or too little stock left or the reamer to cut can impact size. Hitting the bottom of the chamber could impact size. The flow or lack of coolant can impact size. Runout in the machine set-up can impact size. </p><p></p><p>I would suspect most rifle manufacturers have a system that allows for a machine operator that doesn't have to do much other than load and unload parts, but they may not, and the machinist running the barrels may be critical to fit, form, and function.</p></blockquote><p></p>
[QUOTE="DaveTN, post: 5694043, member: 3052"] I'm not a gunsmith and I have never reamed a rifle chamber, But I'm a Toolmaker that has reamed plenty of critical tolerance holes. A reamer needs to cut. If it isn't doing so, it can cause an oversized hole. I assume the chamber is roughed out prior to a finish reamer? The drill size or a roughing reamer is critical, too much or too little stock left or the reamer to cut can impact size. Hitting the bottom of the chamber could impact size. The flow or lack of coolant can impact size. Runout in the machine set-up can impact size. I would suspect most rifle manufacturers have a system that allows for a machine operator that doesn't have to do much other than load and unload parts, but they may not, and the machinist running the barrels may be critical to fit, form, and function. [/QUOTE]
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Rimfire accuracy...
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