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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I finally got to shoot my new 300 Ultra
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<blockquote data-quote="Darryl Cassel" data-source="post: 21339" data-attributes="member: 34"><p>Vince</p><p></p><p>I have been watching your testing with interest.</p><p></p><p>My next project hunting gun is going to be based on the 300 Ultra mag Improved with at least a 34" to 40" barrel and use nothing but 240 Gr Sierra MKs.</p><p>I know it won't be capable of what my 338/416 does with the 300 gr bullet but, I want to show some of my doubting LR buddies that the 240 gr 30 Cal will out perform the 250 gr 338 bullet from their 338/378 long barreled guns, at 1000 plus yards.</p><p></p><p>I always liked the 240 in my 30/378 Weatherby and could do the testing using this gun. I want to add insult to injury here and show that it can be done with a standard magnum action instead of the high cost customs. I do have big custom actions on my 30/378 and the 338/416IMP.</p><p></p><p>The problem you may encounter ( I found this out years ago) is that some of the slow VV powders you mentioned may not burn complete in the 29 1/2" barrel. This is another reason we like the longer barrels (at least 36") to allow the burn rate enough time and then we can use those powders effectivly.</p><p></p><p>I think that if you are getting 3140 with a 29 1/2 " barrel without much pressure signs, that could make for great longrange potential.</p><p></p><p>I ran, on my ballistics program, the 240 (30 Cal) against the 338 250 gr and even gave the 338 a 100 FPS head start and at far less then 1000 yards the 240 outperformed it all the way around. I started the 338/378 250 gr bullet with a BC of .587 out at 3350 (my buddies are getting that velocity with LONG barrels) and the 30/378 (Mine) with the 240 gr (BC of .711 as Oehler stated) bullets out at 3250 and the 240 had more retained velocity and energy starting at 400 yards and continuing on out to 2000 yards and beyond. </p><p>Even at 3150 the 240 will catch the 250 gr 338 and out perform it ballisticaly. </p><p></p><p>Keep us posted and I will do the same on my project. I will be using an Improved version of the 300 Ultra and hope that Federal and Norma will supply us with brass soon for the 300 Ultra. The Remington brass has been the down fall of the case and the MAIN reason I have not been too interested in it up to this point.</p><p></p><p>How much BMG are you stuffing in the Standard Ultra case? </p><p></p><p>Later and good shooting.</p><p>Darryl Cassel</p><p></p><p>[ 12-10-2001: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 21339, member: 34"] Vince I have been watching your testing with interest. My next project hunting gun is going to be based on the 300 Ultra mag Improved with at least a 34" to 40" barrel and use nothing but 240 Gr Sierra MKs. I know it won't be capable of what my 338/416 does with the 300 gr bullet but, I want to show some of my doubting LR buddies that the 240 gr 30 Cal will out perform the 250 gr 338 bullet from their 338/378 long barreled guns, at 1000 plus yards. I always liked the 240 in my 30/378 Weatherby and could do the testing using this gun. I want to add insult to injury here and show that it can be done with a standard magnum action instead of the high cost customs. I do have big custom actions on my 30/378 and the 338/416IMP. The problem you may encounter ( I found this out years ago) is that some of the slow VV powders you mentioned may not burn complete in the 29 1/2" barrel. This is another reason we like the longer barrels (at least 36") to allow the burn rate enough time and then we can use those powders effectivly. I think that if you are getting 3140 with a 29 1/2 " barrel without much pressure signs, that could make for great longrange potential. I ran, on my ballistics program, the 240 (30 Cal) against the 338 250 gr and even gave the 338 a 100 FPS head start and at far less then 1000 yards the 240 outperformed it all the way around. I started the 338/378 250 gr bullet with a BC of .587 out at 3350 (my buddies are getting that velocity with LONG barrels) and the 30/378 (Mine) with the 240 gr (BC of .711 as Oehler stated) bullets out at 3250 and the 240 had more retained velocity and energy starting at 400 yards and continuing on out to 2000 yards and beyond. Even at 3150 the 240 will catch the 250 gr 338 and out perform it ballisticaly. Keep us posted and I will do the same on my project. I will be using an Improved version of the 300 Ultra and hope that Federal and Norma will supply us with brass soon for the 300 Ultra. The Remington brass has been the down fall of the case and the MAIN reason I have not been too interested in it up to this point. How much BMG are you stuffing in the Standard Ultra case? Later and good shooting. Darryl Cassel [ 12-10-2001: Message edited by: Darryl Cassel ] [/QUOTE]
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I finally got to shoot my new 300 Ultra
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