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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Magazine fed vs benchrest single shot internal ballistic theory
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<blockquote data-quote="AZShooter" data-source="post: 1898484" data-attributes="member: 5219"><p>Based on my experiences distance to lands, throat diameter and angle of the throat is are important factors especially with VLD style bullets. </p><p></p><p>I shoot a variety of hunting rifles and one free recoil heavy 6 BR. I have rebarreled all of them over the years with custom barrels and in some cases like the 6mm-284 or 284 win use Remington takeoffs and rechamber. ALL but two of my barrels are chambered using a custom reamer. Those reamers use a few different specifications than SAMMI. IMO the reamer's specs make a difference. The two that shoot well use SAMMI spec are the 6 BR and the 338 RCM and both of these use Berger hybrid bullets. (more on hybrids below). </p><p></p><p>As to seating bullets, all the bolt action rifles used for hunting get setup as a repeater. The usual approach to creating a load is to seat bullet to fit and feed from magazine. Work up a powder charge then if necessary progressively seat bullet deeper in small increments to fine tune for optimal accuracy. I have found that Berger Hybrid bullets rarely need the seating depth tweaking due to their hybrid ogive design. </p><p></p><p>I am sure others will add to this thread with their observations.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1898484, member: 5219"] Based on my experiences distance to lands, throat diameter and angle of the throat is are important factors especially with VLD style bullets. I shoot a variety of hunting rifles and one free recoil heavy 6 BR. I have rebarreled all of them over the years with custom barrels and in some cases like the 6mm-284 or 284 win use Remington takeoffs and rechamber. ALL but two of my barrels are chambered using a custom reamer. Those reamers use a few different specifications than SAMMI. IMO the reamer's specs make a difference. The two that shoot well use SAMMI spec are the 6 BR and the 338 RCM and both of these use Berger hybrid bullets. (more on hybrids below). As to seating bullets, all the bolt action rifles used for hunting get setup as a repeater. The usual approach to creating a load is to seat bullet to fit and feed from magazine. Work up a powder charge then if necessary progressively seat bullet deeper in small increments to fine tune for optimal accuracy. I have found that Berger Hybrid bullets rarely need the seating depth tweaking due to their hybrid ogive design. I am sure others will add to this thread with their observations. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Magazine fed vs benchrest single shot internal ballistic theory
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