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<blockquote data-quote="yorke-1" data-source="post: 1123507" data-attributes="member: 11960">I have a wildcat based on the 338 RUM Improved that&#039;s very similar to the 6.5 Allen Mag.&nbsp; A straight 7mm RUM necked down to 6.5 would likely get you very similar results without the need to fireform, which is a good thing! Its a great caliber if you understand what you&#039;re getting in to.Focus on the heavy for caliber bullets like the 160gr Matrix. I get 3450 fps with the 160 from a 30&quot; barrel. It shoots as flat as a 338 Edge with the 300gr OTM and as flat as my 7mm RUM did with the 200gr Wildcat bullets. But it does it without the recoil. Mine doesn&#039;t have or need a brake. The 140 and lighter bullets just don&#039;t make sense with that much capacity if you ask me. The only powder I&#039;d recommend is US869. There are some stick powders with slower burn rates but you&#039;ll probably end up with powder bridging issues.Barrel life will be pretty short if you don&#039;t take care of it, and not exactly spectacular even if you do take good care of the bore. It&#039;s the cost of velocity. Mine is built on a large shank Savage so barrels are relatively inexpensive to replace once they&#039;re burned out.I also have a 270 RUM that I haven&#039;t done much with. It should be in the same league with the 165 Matrix VLD.Build your 6.5 RUM and have fun with it. Barrels were made to be burned out and replaced. That&#039;s why they&#039;re threaded on and not welded.Andrew</blockquote>

[QUOTE="yorke-1, post: 1123507, member: 11960"] I have a wildcat based on the 338 RUM Improved that's very similar to the 6.5 Allen Mag. A straight 7mm RUM necked down to 6.5 would likely get you very similar results without the need to fireform, which is a good thing! Its a great caliber if you understand what you're getting in to. Focus on the heavy for caliber bullets like the 160gr Matrix. I get 3450 fps with the 160 from a 30" barrel. It shoots as flat as a 338 Edge with the 300gr OTM and as flat as my 7mm RUM did with the 200gr Wildcat bullets. But it does it without the recoil. Mine doesn't have or need a brake. The 140 and lighter bullets just don't make sense with that much capacity if you ask me. The only powder I'd recommend is US869. There are some stick powders with slower burn rates but you'll probably end up with powder bridging issues. Barrel life will be pretty short if you don't take care of it, and not exactly spectacular even if you do take good care of the bore. It's the cost of velocity. Mine is built on a large shank Savage so barrels are relatively inexpensive to replace once they're burned out. I also have a 270 RUM that I haven't done much with. It should be in the same league with the 165 Matrix VLD. Build your 6.5 RUM and have fun with it. Barrels were made to be burned out and replaced. That's why they're threaded on and not welded. Andrew [/QUOTE]

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