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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
which powder ? 7mm ultra mag w/ 32" barrel & 139gr sst interbonds.
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<blockquote data-quote="Varmint Hunter" data-source="post: 31107" data-attributes="member: 313"><p>I originally built my 7STW with the intention of only shooting 140gr or similar weight bullets. I had my Hart barrel made with a 1-11 twist. It is very accurate with the light-midweight bullets.</p><p></p><p>However, the case capacity is so large that the cartridge is more compatable with heavier bullets, especially when shooting looong range. Most of the 168gr-180gr bullets require a faster twist and will not stabilize in my barrel. </p><p></p><p>IMO a 9.5 or 10 twist would be a better choice in the 7RUM. You could still shoot the 139's and will also have enough twist for the heavys, should you ever decide to go that route.</p><p></p><p>As to the powder, I got very good results with RE25 and H1000 with the 140gr bullet in my 7STW. I believe that the 7RUM has a bit more case capacity than the 7STW.</p><p></p><p>VH</p><p></p><p>[ 01-29-2004: Message edited by: Varmint Hunter ]</p></blockquote><p></p>
[QUOTE="Varmint Hunter, post: 31107, member: 313"] I originally built my 7STW with the intention of only shooting 140gr or similar weight bullets. I had my Hart barrel made with a 1-11 twist. It is very accurate with the light-midweight bullets. However, the case capacity is so large that the cartridge is more compatable with heavier bullets, especially when shooting looong range. Most of the 168gr-180gr bullets require a faster twist and will not stabilize in my barrel. IMO a 9.5 or 10 twist would be a better choice in the 7RUM. You could still shoot the 139's and will also have enough twist for the heavys, should you ever decide to go that route. As to the powder, I got very good results with RE25 and H1000 with the 140gr bullet in my 7STW. I believe that the 7RUM has a bit more case capacity than the 7STW. VH [ 01-29-2004: Message edited by: Varmint Hunter ] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
which powder ? 7mm ultra mag w/ 32" barrel & 139gr sst interbonds.
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