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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Loose bore = Less Velocity?
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<blockquote data-quote="Radman" data-source="post: 2880143" data-attributes="member: 112033"><p>IMO: Lots of wisdom in your words. Well-said! Like people, every barrel is likely different.... somewhere. During production tooling changes, (due to temperature & wear), hydraulic oil temperature changes, (which often controls cutting feeds & speeds), plus coolant flow & temperature on drills, reamers & buttons. Ever wonder how much coolant actually makes it down the barrel as the bore fills with the ever-penetrating drill or reamer filling the void. If a drill or reamer gets hotter at certain points as it moves through the stock it naturally gets hotter = cuts more material! I would think even ambient temperatures where stock is stored obviously matters. Also IMO: straightening barrels BEFORE machining is ultra important. (Sure you can straighten them afterwards but then you may likely have a barrel with a bore that isn't straight or concentric)</p><p>You frequently bring up GREAT points VinceMule.</p></blockquote><p></p>
[QUOTE="Radman, post: 2880143, member: 112033"] IMO: Lots of wisdom in your words. Well-said! Like people, every barrel is likely different.... somewhere. During production tooling changes, (due to temperature & wear), hydraulic oil temperature changes, (which often controls cutting feeds & speeds), plus coolant flow & temperature on drills, reamers & buttons. Ever wonder how much coolant actually makes it down the barrel as the bore fills with the ever-penetrating drill or reamer filling the void. If a drill or reamer gets hotter at certain points as it moves through the stock it naturally gets hotter = cuts more material! I would think even ambient temperatures where stock is stored obviously matters. Also IMO: straightening barrels BEFORE machining is ultra important. (Sure you can straighten them afterwards but then you may likely have a barrel with a bore that isn't straight or concentric) You frequently bring up GREAT points VinceMule. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Loose bore = Less Velocity?
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