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Long Range Hunting & Shooting
What barrel
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<blockquote data-quote="budlight" data-source="post: 1903919" data-attributes="member: 2939"><p>You need to find some articles on barrel length and velocity. Law of diminishing returns with small powder charge and caliber.</p><p></p><p>IMO. and I have had my share of long barrels. In 6mm all you need is 26 -28 inches and you can get one of the medium contours </p><p></p><p> <a href="https://riflebarrels.com/barrel-contour-data/" target="_blank">https://riflebarrels.com/barrel-contour-data/</a> </p><p></p><p> Like for instance a number 6 or even 5 about 4 pound 27 inch barrel. I have a #6 with a 2 inch brake for 29 inches in a 243 win. You look at the end diameter of .750 minus .243 and you still have enough barrel diameter for good harmonics. The longer the barrel the thicker it has to be for stability. I go from varmints to antelope with it so I didn't want a special twist for just the heaviest bullet So I kind of only shoot 75 to 105 gr. and the 243 win has enough velocity. So a 9:1 twist is okay. I try to be easy on the barrel and cases so my typical hunting 100 spbt is only heading out at 3100 fps. I use the slowest powder like R-25 or R26 maybe superformance. That will take out a white tail at 400 yards</p></blockquote><p></p>
[QUOTE="budlight, post: 1903919, member: 2939"] You need to find some articles on barrel length and velocity. Law of diminishing returns with small powder charge and caliber. IMO. and I have had my share of long barrels. In 6mm all you need is 26 -28 inches and you can get one of the medium contours [URL]https://riflebarrels.com/barrel-contour-data/[/URL] Like for instance a number 6 or even 5 about 4 pound 27 inch barrel. I have a #6 with a 2 inch brake for 29 inches in a 243 win. You look at the end diameter of .750 minus .243 and you still have enough barrel diameter for good harmonics. The longer the barrel the thicker it has to be for stability. I go from varmints to antelope with it so I didn't want a special twist for just the heaviest bullet So I kind of only shoot 75 to 105 gr. and the 243 win has enough velocity. So a 9:1 twist is okay. I try to be easy on the barrel and cases so my typical hunting 100 spbt is only heading out at 3100 fps. I use the slowest powder like R-25 or R26 maybe superformance. That will take out a white tail at 400 yards [/QUOTE]
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