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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
308 Win Chamber Variances
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<blockquote data-quote="chris matthews" data-source="post: 74031" data-attributes="member: 66"><p>I'll go ahead and chime in here....</p><p>I have 2 reamers that I use for the 308 Win.</p><p>1. PTG 308 Bisley Match with a 0.339 neck- used on Ric's rifle and my personal 308- You can use Winchester brass or ammo, Black Hills ammo and Lapua brass or ammo without neck turning. Throated for the 175 MK.</p><p>2. Is the same thing but with a 0.342 neck and it will take ANYTHING including the super thick Federal brass.</p><p></p><p>Most 308 factory ammo is about 0.339 or 0.340 in diameter at the neck on a loaded round- you can see that the 342 nk still gives plenty of room but keeps you from over working the brass. 0.346" is SAAMI spec for the neck- works the hell out of the brass and can decrease the number of firings before annealing is needed.</p><p></p><p>Both reamers are "Match" reamers, meaning they are SAAMI min. spec in the body....</p><p></p><p>But like was mentioned a good straight chamber is better....</p></blockquote><p></p>
[QUOTE="chris matthews, post: 74031, member: 66"] I'll go ahead and chime in here.... I have 2 reamers that I use for the 308 Win. 1. PTG 308 Bisley Match with a 0.339 neck- used on Ric's rifle and my personal 308- You can use Winchester brass or ammo, Black Hills ammo and Lapua brass or ammo without neck turning. Throated for the 175 MK. 2. Is the same thing but with a 0.342 neck and it will take ANYTHING including the super thick Federal brass. Most 308 factory ammo is about 0.339 or 0.340 in diameter at the neck on a loaded round- you can see that the 342 nk still gives plenty of room but keeps you from over working the brass. 0.346" is SAAMI spec for the neck- works the hell out of the brass and can decrease the number of firings before annealing is needed. Both reamers are "Match" reamers, meaning they are SAAMI min. spec in the body.... But like was mentioned a good straight chamber is better.... [/QUOTE]
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308 Win Chamber Variances
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