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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet choices for 300 RUM
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<blockquote data-quote="jmden" data-source="post: 337525" data-attributes="member: 1742"><p>Jon A,</p><p> </p><p>I'm sure I'm showing my lack of knowledge here, but how does that boresighter work when you have different barrel lengths and thus different distances from the scope reticle? If one barrel is 24" and another is 30", wouldn't that change the 'scale' of the boresighter such that the measurements would be inconsistent? What about a rifle that has the scope moved forward a bit more for prone shooting than is typical for most rifle? So, how does the boresighter you linked to adjust for different fore/aft scope positions and/or different barrel lengths and still remain a truly consistent measuring device? There must be a principle at work that I'm not aware of. I've not used boresighters/collimators and have no experience here.</p><p> </p><p>Jon</p></blockquote><p></p>
[QUOTE="jmden, post: 337525, member: 1742"] Jon A, I'm sure I'm showing my lack of knowledge here, but how does that boresighter work when you have different barrel lengths and thus different distances from the scope reticle? If one barrel is 24" and another is 30", wouldn't that change the 'scale' of the boresighter such that the measurements would be inconsistent? What about a rifle that has the scope moved forward a bit more for prone shooting than is typical for most rifle? So, how does the boresighter you linked to adjust for different fore/aft scope positions and/or different barrel lengths and still remain a truly consistent measuring device? There must be a principle at work that I'm not aware of. I've not used boresighters/collimators and have no experience here. Jon [/QUOTE]
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Bullet choices for 300 RUM
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