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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ball powder vs. grain in the 30-378 wby
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<blockquote data-quote="Darryl Cassel" data-source="post: 24596" data-attributes="member: 34"><p>Texas</p><p></p><p>I wouldn't waste "my" time with the 250 gr 338 Sierra MK in my 338/416 Rigby with the 37" barrel. The rifle was built for the 300 gr and the results are unreal. If it's not broke, I won't fix it.</p><p></p><p>The 250gr only has a .5 BC and that's not anywhere near what the the 300 gr produces and not good enough for the ranges I like to reach out with my 338/416.</p><p></p><p>The 250 gr 338 would be for a smaller case OR a large case with a shorter barrel such as 30" or less where you can't get the desired velocity out of the 300 gr bullet. </p><p></p><p>Ray Romain uses the 250 Gr in his 338/375 (just an improved Weatherby case) Case and has a 34" barrel. We teamed up on a Colorado Mule deer this past season and he got it at 1800 yrds with his rig. The bullet arrived with 800 Foot pounds of energy and after closer inspection penitrated both shoulders and exited the far side. The exit hole was very small being about 1" diameter.</p><p> </p><p>His shoots very well, but won't hold a candle to the 338/416 with a longer barrel, 300 gr MK and larger case as per energy and velocity at extreme range.</p><p></p><p>Later</p><p>DC</p><p></p><p>PS---Chris, how do you like those legs Jim makes? They are top of the line. </p><p>Someday I'll have to show you how the Cam and crank shaft gears and chain work on my table for the elevation.</p><p></p><p>[ 01-04-2003: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 24596, member: 34"] Texas I wouldn't waste "my" time with the 250 gr 338 Sierra MK in my 338/416 Rigby with the 37" barrel. The rifle was built for the 300 gr and the results are unreal. If it's not broke, I won't fix it. The 250gr only has a .5 BC and that's not anywhere near what the the 300 gr produces and not good enough for the ranges I like to reach out with my 338/416. The 250 gr 338 would be for a smaller case OR a large case with a shorter barrel such as 30" or less where you can't get the desired velocity out of the 300 gr bullet. Ray Romain uses the 250 Gr in his 338/375 (just an improved Weatherby case) Case and has a 34" barrel. We teamed up on a Colorado Mule deer this past season and he got it at 1800 yrds with his rig. The bullet arrived with 800 Foot pounds of energy and after closer inspection penitrated both shoulders and exited the far side. The exit hole was very small being about 1" diameter. His shoots very well, but won't hold a candle to the 338/416 with a longer barrel, 300 gr MK and larger case as per energy and velocity at extreme range. Later DC PS---Chris, how do you like those legs Jim makes? They are top of the line. Someday I'll have to show you how the Cam and crank shaft gears and chain work on my table for the elevation. [ 01-04-2003: Message edited by: Darryl Cassel ] [/QUOTE]
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Ball powder vs. grain in the 30-378 wby
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