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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel length for a new .264 Win mag Build
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<blockquote data-quote="Trnelson" data-source="post: 1665276" data-attributes="member: 42308"><p>The new 264win that I just recently finished was set up specifically for the Berger 155g, the reamer was cut with 0.0663" more free bore from the cartridge base to the ogive than a SAAMI spec reamer. I am also running a 32" barrel. I settled on shooting the 160g Matrix VLD and with that reamer the base of the bearing surface of the 160 Matrix is 0.002" below the neck to shoulder junction of the case. </p><p>I found my seating depth, then worked up to 3,180fps where I had the first indication of hesitation in primary bolt lift. I then worked back down and settled in at 3,070 where I found the best SD with an SD of 7. I'm running with plenty of room to spare out of a 300 win mag AI detachable magazine. </p><p>Hope that sheds a little more light on what the longer 150-150g bullets want so you don't have to give up any case capacity.</p></blockquote><p></p>
[QUOTE="Trnelson, post: 1665276, member: 42308"] The new 264win that I just recently finished was set up specifically for the Berger 155g, the reamer was cut with 0.0663” more free bore from the cartridge base to the ogive than a SAAMI spec reamer. I am also running a 32” barrel. I settled on shooting the 160g Matrix VLD and with that reamer the base of the bearing surface of the 160 Matrix is 0.002” below the neck to shoulder junction of the case. I found my seating depth, then worked up to 3,180fps where I had the first indication of hesitation in primary bolt lift. I then worked back down and settled in at 3,070 where I found the best SD with an SD of 7. I’m running with plenty of room to spare out of a 300 win mag AI detachable magazine. Hope that sheds a little more light on what the longer 150-150g bullets want so you don’t have to give up any case capacity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel length for a new .264 Win mag Build
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