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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 Win Mag 250 or 300 SMK
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<blockquote data-quote="edward hogan" data-source="post: 346967" data-attributes="member: 1341"><p>RE oal of loaded .338/300</p><p></p><p>I was using an LSS action from a .300rum I bought in 03. Never fired that one, just pulled the barrel and put on the .338win barrel.</p><p></p><p>Have a Sendero SF mag box on my desk right now. It measures right at 3.7" oal; so figure 3.6 or maybe 3.65" max oal for loaded cartridge. A once-fired .338/300 case (from my chamber) measures 2.595"oal. With a 250gr Sierra GameKing being about 1.4" oal you can seat the bullet way out there in a Rem 700.</p><p></p><p>With a Hornady 200gr, you can seat to just below the cannelure and have no bullet protrusion into the neck of the case. Not to say this is conducive to accuracy, but you have a great range of seating potential. Neck length is about .285" on my fired case.</p><p></p><p>Beauty of reaming your own chamber is you can shorten the case body dimension and get all the neck length your original barrel offered. All sorts of options there.</p><p></p><p>Also if you start with a standard or .510 case body diameter, you could improve/ream for next up dimension .338 case. .330 dakota and then Ultra mag. In theory as you ream for a larger chamber you get a new throat area that maybe isn't burned?</p></blockquote><p></p>
[QUOTE="edward hogan, post: 346967, member: 1341"] RE oal of loaded .338/300 I was using an LSS action from a .300rum I bought in 03. Never fired that one, just pulled the barrel and put on the .338win barrel. Have a Sendero SF mag box on my desk right now. It measures right at 3.7" oal; so figure 3.6 or maybe 3.65" max oal for loaded cartridge. A once-fired .338/300 case (from my chamber) measures 2.595"oal. With a 250gr Sierra GameKing being about 1.4" oal you can seat the bullet way out there in a Rem 700. With a Hornady 200gr, you can seat to just below the cannelure and have no bullet protrusion into the neck of the case. Not to say this is conducive to accuracy, but you have a great range of seating potential. Neck length is about .285" on my fired case. Beauty of reaming your own chamber is you can shorten the case body dimension and get all the neck length your original barrel offered. All sorts of options there. Also if you start with a standard or .510 case body diameter, you could improve/ream for next up dimension .338 case. .330 dakota and then Ultra mag. In theory as you ream for a larger chamber you get a new throat area that maybe isn't burned? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 Win Mag 250 or 300 SMK
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