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Rifles, Reloading, Optics, Equipment
Equipment Discussions
7MM WSM - LA or SA with an extended mag box ...?
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<blockquote data-quote="dwm" data-source="post: 44776" data-attributes="member: 1136"><p>Thanks Chris,</p><p></p><p>Both the 7mm - 154 Interbond and 162 AMAX seated to optimum length in a RSAUM case are &gt; 2.95. The 168 SMK is 2.852 OAL at optimim seating depth. Only the 139 Interbond and 160 Partition fit in the mag well with a decent OAL. This is with the top of the boat tail seated to the bottom of the neck.</p><p></p><p>The factory mag well in a REM700 SAUM will handle an OAL of 2.825 - SAMMI. So with the Wyatt box I would be gaining 0.025 to 0.075 inches, is that worth it? (I am still thinking about it, sure wish I could do it with a dremel.)</p><p></p><p>The 7mm WSM has a max SAMMI OAL length of 2.86. I guess the Winchesters and Savages must have a longer short action mag well than the REM700 to handle the WSM OAL.</p><p></p><p>7mm case length:</p><p>SAUM 1.724" base to bottom of neck - 75 GR water</p><p>WSM 1.858" base to bottom of neck - 83.2 GR water</p><p></p><p>Some 7mm bullet lengths:</p><p></p><p>1.280" 160 Partition</p><p>1.288" 139 Interbond</p><p>1.365" 175 Partition</p><p>1.366" 168 SMK</p><p>1.386" 154 Interbond</p><p>1.402" 160 Accubond</p><p>1.419" 162 AMAX</p><p>1.438" 168 Berger</p><p></p><p>[ 03-24-2004: Message edited by: dwm ]</p></blockquote><p></p>
[QUOTE="dwm, post: 44776, member: 1136"] Thanks Chris, Both the 7mm - 154 Interbond and 162 AMAX seated to optimum length in a RSAUM case are > 2.95. The 168 SMK is 2.852 OAL at optimim seating depth. Only the 139 Interbond and 160 Partition fit in the mag well with a decent OAL. This is with the top of the boat tail seated to the bottom of the neck. The factory mag well in a REM700 SAUM will handle an OAL of 2.825 - SAMMI. So with the Wyatt box I would be gaining 0.025 to 0.075 inches, is that worth it? (I am still thinking about it, sure wish I could do it with a dremel.) The 7mm WSM has a max SAMMI OAL length of 2.86. I guess the Winchesters and Savages must have a longer short action mag well than the REM700 to handle the WSM OAL. 7mm case length: SAUM 1.724" base to bottom of neck - 75 GR water WSM 1.858" base to bottom of neck - 83.2 GR water Some 7mm bullet lengths: 1.280" 160 Partition 1.288" 139 Interbond 1.365" 175 Partition 1.366" 168 SMK 1.386" 154 Interbond 1.402" 160 Accubond 1.419" 162 AMAX 1.438" 168 Berger [ 03-24-2004: Message edited by: dwm ] [/QUOTE]
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7MM WSM - LA or SA with an extended mag box ...?
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