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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 edge, 300 rum, 7 rum
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<blockquote data-quote="Autorotate" data-source="post: 602780" data-attributes="member: 8073"><p><span style="color: black"><span style="font-family: 'Verdana'">Lots of good advice already posted....I'll contribute my 2 cents...</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">The 300 grain NAB does hold great promise....but it will be interesting to see the final "real world" BC lives up to the .7 numbers in the 2012 catalog.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Instead of looking at drop, I would recommend you look at your whole "long range system" (i.e. your laser, your capabilities as a shooter, condition reader, and reloader, your observation/shooting optic(s)) and do an honest assessment on what your maximum range will be <strong><u><em>when actually shooting at game.</em></u></strong></span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Having a 1200 yd capable rifle, will be misplaced in a system that all the other supporting items are limited to say 500-700 yds....or vice versa as well. Consideration of future "growth" should be done as well…..it's hard to have the whole package at once for sure. But just be sure to be honest with yourself on your whole system, and how much time/money/effort you are going to be able to apply to the science/art of your goals of Long Range Hunting.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Once you determine that range, using your favorite ballistic calculator (<a href="http://www.google.com/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&ved=0CCIQFjAA&url=http%3A%2F%2Fwww.jbmballistics.com%2F&ei=J8MbT_HQNebV0QGz6vDICw&usg=AFQjCNFR-FGLpG6ADTi37y6OQONQrWjUeA&sig2=XriU7tWoYEAkAdhNRiJsMw" target="_blank"><strong>JBM ballistics</strong></a>, <a href="http://www.gseven.com/films/sunjectthree/g7-free-online-ballistics-calculator---overview-(1" target="_blank"><span style="color: #800080"><strong>Gseven</strong></span></a>, etc) look at wind drift at a 7 mph wind value for that range comparing the respective calibers you are considering. When contemplating the MV potential of these calibers, be sure to consider the temperature sensitivity/tolerance of the class of powder. I.E. 7mm Benford Laser magnum might be able to push a 200 gr Wildcat bullet at 3400 fps, but with what powder?? If it's a temp sensitive one, <u>you'll be evaluating that caliber's potential on a powder you'll likely <em>never</em> use with LRH.</u></span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Once you see the wind drift potential of the calibers you're evaluating, look at down range energy numbers of the respective rounds. Evaluate those numbers against the game you'll be shooting at those ranges, to ensure you'll have sufficient power to do what you want to do.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Barrel life advantage will sway to the larger calibers, but heavier bullets push the rifle a bit harder at the shooter as well. </span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Quality and toughness of available brass should be a consideration, as well as dies that make producing very concentric ammunition relatively easy (i.e. Redding Competition Seater, Type S bushing sizing dies), as straight uniform ammunition will be needed to see the full potential of the rifle.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Selection of high BC bullets in that caliber should be considered, and evaluated during your wind drift comparison of the different calibers. It would be disappointing to build that 7mm Benford Laser magnum, only to find out the high BC 200 gr bullet didn't shoot very well in your particular barrel, and you ended up having to use a much lower BC bullet to obtain the precision you were after....and ended up with less barrel life/exterior ballistic performance than you were after. Or when/if a run is made on reloading components occurs again, and your magic bullet is no longer available. One bullet guns are just that...one bullet guns. Something to consider.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Last but not least, it's just my humble opinion...but as a rough rule of thumb I like LR rifles to weight 1 to 1.2 lbs for every hundred yards of intended max range. I.E. a 1200 yard rifle capable of cold bore sub 1 MOA shots from a field shooting position rifle is probably going to end up weighing 12-14 lbs min after it's all said and done with barrel contour, optics, adj cheekpiece, brake, etc.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">That weight rule of thumb, may help determine the caliber for you, as some don't like a 9 lb 338 mag, and some think a 14 lb 7mm mag isn't for them as well.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">That weight rule is just my opinion though. I've read about lots of folks shooting 1 MOA at a mile with 8 lb rifles.....not at that level myself.</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Good luck, and good shooting! gun)</span></span></p><p> </p><p><span style="color: black"><span style="font-family: 'Verdana'">Edit-There's a reason the 338 Lapua, Edge, and RUM are very popular....they are like the Chevy small block, or 5.9 Cummins....proven platforms, with recipes for success that have been proven time and time again. </span></span></p></blockquote><p></p>
[QUOTE="Autorotate, post: 602780, member: 8073"] [COLOR=black][FONT=Verdana]Lots of good advice already posted....I'll contribute my 2 cents...[/FONT][/COLOR] [COLOR=black][FONT=Verdana]The 300 grain NAB does hold great promise....but it will be interesting to see the final "real world" BC lives up to the .7 numbers in the 2012 catalog.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Instead of looking at drop, I would recommend you look at your whole "long range system" (i.e. your laser, your capabilities as a shooter, condition reader, and reloader, your observation/shooting optic(s)) and do an honest assessment on what your maximum range will be [B][U][I]when actually shooting at game.[/I][/U][/B][/FONT][/COLOR] [COLOR=black][FONT=Verdana]Having a 1200 yd capable rifle, will be misplaced in a system that all the other supporting items are limited to say 500-700 yds....or vice versa as well. Consideration of future “growth” should be done as well…..it’s hard to have the whole package at once for sure. But just be sure to be honest with yourself on your whole system, and how much time/money/effort you are going to be able to apply to the science/art of your goals of Long Range Hunting.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Once you determine that range, using your favorite ballistic calculator ([URL="http://www.google.com/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&ved=0CCIQFjAA&url=http%3A%2F%2Fwww.jbmballistics.com%2F&ei=J8MbT_HQNebV0QGz6vDICw&usg=AFQjCNFR-FGLpG6ADTi37y6OQONQrWjUeA&sig2=XriU7tWoYEAkAdhNRiJsMw"][B]JBM ballistics[/B][/URL], [URL="http://www.gseven.com/films/sunjectthree/g7-free-online-ballistics-calculator---overview-(1"][COLOR=#800080][B]Gseven[/B][/COLOR][/URL], etc) look at wind drift at a 7 mph wind value for that range comparing the respective calibers you are considering. When contemplating the MV potential of these calibers, be sure to consider the temperature sensitivity/tolerance of the class of powder. I.E. 7mm Benford Laser magnum might be able to push a 200 gr Wildcat bullet at 3400 fps, but with what powder?? If it's a temp sensitive one, [U]you'll be evaluating that caliber's potential on a powder you'll likely [I]never[/I] use with LRH.[/U][/FONT][/COLOR] [COLOR=black][FONT=Verdana]Once you see the wind drift potential of the calibers you're evaluating, look at down range energy numbers of the respective rounds. Evaluate those numbers against the game you'll be shooting at those ranges, to ensure you'll have sufficient power to do what you want to do.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Barrel life advantage will sway to the larger calibers, but heavier bullets push the rifle a bit harder at the shooter as well. [/FONT][/COLOR] [COLOR=black][FONT=Verdana]Quality and toughness of available brass should be a consideration, as well as dies that make producing very concentric ammunition relatively easy (i.e. Redding Competition Seater, Type S bushing sizing dies), as straight uniform ammunition will be needed to see the full potential of the rifle.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Selection of high BC bullets in that caliber should be considered, and evaluated during your wind drift comparison of the different calibers. It would be disappointing to build that 7mm Benford Laser magnum, only to find out the high BC 200 gr bullet didn't shoot very well in your particular barrel, and you ended up having to use a much lower BC bullet to obtain the precision you were after....and ended up with less barrel life/exterior ballistic performance than you were after. Or when/if a run is made on reloading components occurs again, and your magic bullet is no longer available. One bullet guns are just that...one bullet guns. Something to consider.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Last but not least, it's just my humble opinion...but as a rough rule of thumb I like LR rifles to weight 1 to 1.2 lbs for every hundred yards of intended max range. I.E. a 1200 yard rifle capable of cold bore sub 1 MOA shots from a field shooting position rifle is probably going to end up weighing 12-14 lbs min after it's all said and done with barrel contour, optics, adj cheekpiece, brake, etc.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]That weight rule of thumb, may help determine the caliber for you, as some don't like a 9 lb 338 mag, and some think a 14 lb 7mm mag isn't for them as well.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]That weight rule is just my opinion though. I've read about lots of folks shooting 1 MOA at a mile with 8 lb rifles.....not at that level myself.[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Good luck, and good shooting! gun)[/FONT][/COLOR] [COLOR=black][FONT=Verdana]Edit-There's a reason the 338 Lapua, Edge, and RUM are very popular....they are like the Chevy small block, or 5.9 Cummins....proven platforms, with recipes for success that have been proven time and time again. [/FONT][/COLOR] [/QUOTE]
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