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Long Range Hunting & Shooting
338 rum rifle build?
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<blockquote data-quote="Lightvarmint" data-source="post: 217602"><p>Hello,</p><p></p><p>My one fully custom repeater that I use during the rut in Missouri is a Hall Express in 338 RUM w/ 225 Accubonds at 3220 and loaded to function in the magazine for running shots. Basically unlimited brass life at these pressures (still on the first set of brass)..... I had the reamer set up to engage the lands at the magazine box length and the rifle likes the bullets .030 off the lands. Very accurate and lethal combination.</p><p></p><p>Now if you really want something impressive, take a look at this....... We have a 30/378 that we shoot .900+ BC Henson bullets at 3274.9 fps. When you crunch the numbers on this comparing it to the 338 Allen Magnum using 300 SMKs at the velocity that Kirby recently posted on this website (for his 5 shot case reloading pressure level which is the same criteria in the 30/378), you will find that this 220 grain high BC Henson bullet SURPASSES the bigger 300 SMK at 1700 yards in KINETIC energy, is running 252 fps faster than the 300 SMK and has 13.5 FEET LESS DROP at that same yardage as compared to the 300 SMK fired out of the 338 Allen Magnum.</p><p></p><p>At 3000 yards the velocity is 1065.8 for the 220 grain Henson bullet and 936.3 for the 300SMK.</p><p></p><p>All of this with 40 or so grains less powder using the 30/378 Weatherby case versus the Allen Magnum case.</p><p></p><p>To me, this is impressive............. And MUCH MORE efficient!</p><p></p><p>James</p></blockquote><p></p>
[QUOTE="Lightvarmint, post: 217602"] Hello, My one fully custom repeater that I use during the rut in Missouri is a Hall Express in 338 RUM w/ 225 Accubonds at 3220 and loaded to function in the magazine for running shots. Basically unlimited brass life at these pressures (still on the first set of brass)..... I had the reamer set up to engage the lands at the magazine box length and the rifle likes the bullets .030 off the lands. Very accurate and lethal combination. Now if you really want something impressive, take a look at this....... We have a 30/378 that we shoot .900+ BC Henson bullets at 3274.9 fps. When you crunch the numbers on this comparing it to the 338 Allen Magnum using 300 SMKs at the velocity that Kirby recently posted on this website (for his 5 shot case reloading pressure level which is the same criteria in the 30/378), you will find that this 220 grain high BC Henson bullet SURPASSES the bigger 300 SMK at 1700 yards in KINETIC energy, is running 252 fps faster than the 300 SMK and has 13.5 FEET LESS DROP at that same yardage as compared to the 300 SMK fired out of the 338 Allen Magnum. At 3000 yards the velocity is 1065.8 for the 220 grain Henson bullet and 936.3 for the 300SMK. All of this with 40 or so grains less powder using the 30/378 Weatherby case versus the Allen Magnum case. To me, this is impressive............. And MUCH MORE efficient! James [/QUOTE]
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