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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
For 7 mm enthusiasts
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<blockquote data-quote="MudRunner2005" data-source="post: 852343" data-attributes="member: 12995"><p>You will love an STW. Midway has several websites for ordering outside the US, and I'm sure you could pick up brass and dies and a chamber reamer there.</p><p> </p><p>I personally think the STW is better than the 7RUM as it is a more efficient caliber. After the STW you sort of hit a wall, called "the point of diminishing returns". Meaning that once you go bigger than the STW will start having detrimental effects like horrible barrel life, severe throat erosion, etc...For very little gains in velocity and energy.</p><p> </p><p>With the RUM you jump up another 15-20 grains of powder just to gain 80-100 fps, but you lose nearly 400 shots of barrel life compared to the STW. I have heard of many guys getting 1200-1500 rounds of an STW barrel with moderate loads and big heavy slower-movin bullets. The fast light bullets with heavy powder charges tend to burn up the throats and barrels alot quicker. I have heard of guys burning out 7RUM barrels in 400-800 shots.</p><p> </p><p>The ONLY advantage I can see to the RUM is it is a beltless case so the brass lasts longer.</p><p> </p><p>To me the disadvantages of the RUM make it a caliber that I have no interest in owning, even though I have am one of the biggest 7mm fans out there.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 852343, member: 12995"] You will love an STW. Midway has several websites for ordering outside the US, and I'm sure you could pick up brass and dies and a chamber reamer there. I personally think the STW is better than the 7RUM as it is a more efficient caliber. After the STW you sort of hit a wall, called "the point of diminishing returns". Meaning that once you go bigger than the STW will start having detrimental effects like horrible barrel life, severe throat erosion, etc...For very little gains in velocity and energy. With the RUM you jump up another 15-20 grains of powder just to gain 80-100 fps, but you lose nearly 400 shots of barrel life compared to the STW. I have heard of many guys getting 1200-1500 rounds of an STW barrel with moderate loads and big heavy slower-movin bullets. The fast light bullets with heavy powder charges tend to burn up the throats and barrels alot quicker. I have heard of guys burning out 7RUM barrels in 400-800 shots. The ONLY advantage I can see to the RUM is it is a beltless case so the brass lasts longer. To me the disadvantages of the RUM make it a caliber that I have no interest in owning, even though I have am one of the biggest 7mm fans out there. [/QUOTE]
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