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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Ultramag, Freebore & Accuracy
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<blockquote data-quote="tlshores" data-source="post: 646170" data-attributes="member: 47345"><p>Hello Ian,</p><p></p><p>I realize that I am replying to a post that is more than a year old.</p><p>Maybe this is no longer of interest but, .......</p><p></p><p>I have shot bullets in the 140mm weight exclusively in my 7mm Ultramag.</p><p></p><p>With a 139 gr Hornady SST loaded at the recommended depth of 3.580", the bullet doesn't engage the throat until it travels a whopping 0.442"</p><p></p><p>I have never seen a rifle with anywhere near this amount of freebore..</p><p>I'm sure this is necessary to get the bullet up to speed on a cartridge that is massively overbore.</p><p>Otherwise the pressures would be tremendous.</p><p></p><p>The good news is that my Ultramag is extremely accurate with these light bullets.</p><p>It stands in defiance of logic but the freebore doesn't seem to matter.</p><p>My rifle routinely shoots around 1" groups with Remington factory ammo.</p><p>It performs equally well with handloaded Hornadys.</p><p></p><p>Even with the heavier bullets, the freebore is only reduced about .050"</p><p>I wouldn't advise seating them out further even though the longer bullet might permit it.</p><p></p><p>This caliber demands and abundance of caution.</p><p></p><p>Tls</p></blockquote><p></p>
[QUOTE="tlshores, post: 646170, member: 47345"] Hello Ian, I realize that I am replying to a post that is more than a year old. Maybe this is no longer of interest but, ....... I have shot bullets in the 140mm weight exclusively in my 7mm Ultramag. With a 139 gr Hornady SST loaded at the recommended depth of 3.580", the bullet doesn't engage the throat until it travels a whopping 0.442" I have never seen a rifle with anywhere near this amount of freebore.. I'm sure this is necessary to get the bullet up to speed on a cartridge that is massively overbore. Otherwise the pressures would be tremendous. The good news is that my Ultramag is extremely accurate with these light bullets. It stands in defiance of logic but the freebore doesn't seem to matter. My rifle routinely shoots around 1" groups with Remington factory ammo. It performs equally well with handloaded Hornadys. Even with the heavier bullets, the freebore is only reduced about .050" I wouldn't advise seating them out further even though the longer bullet might permit it. This caliber demands and abundance of caution. Tls [/QUOTE]
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7mm Ultramag, Freebore & Accuracy
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