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Long Range Hunting & Shooting
Spreadsheet to determine best long range hunting cartridge
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<blockquote data-quote="packgoatguy" data-source="post: 1556792" data-attributes="member: 27192"><p>My assumption regarding barrel length, is simply that ALL cartridges will benefit from additional barrel length, and all will suffer from less barrel length, so to pick a different barrel length for the comparison would require the same rifle platform shooting 15 different cartridges. When cartridge manufactures test their cartridges, they pick a "standard" barrel length (in this case, 24 inches) that they will use to test all of their cartridges against, to keep all things equal. It would not be fair to the analysis to put a 28 inch 280AI barrel against a 24 inch 28Nosler, and visa versa. Both cartridges can benefit from the increased barrel length, and probably in fairly equal degree, so to show velocities at all barrel lengths, when trying to compare cartridges side by side does little but add additional data points. However, if someone can point me to verifiable data that would suggest some of the included cartridges in this comparison are susceptible to a greater velocity increase than other cartridges (in some significant degree), then that would be very interesting for this analysis. </p><p></p><p>Your assessment about the ability to make a lighter weight rifle with the 280AI vs a larger 7mm is significant, and probably one of the most important, all else being equal IMO. However, it would be interesting to quantify it. For example... take the Kimber Mountain Ascent... I believe it is still the "lightest" factory rifle made: in the 6.5CM, 7mm08, and 308 the rifle weighs in at around 4lbs 13 ounces. For the 300WSM it weighs 5lbs 12 ounces. For the 280AI, it weighs 5lbs 10oz. For the 300WM/7mmWM it weighs 6lbs 7oz. That is all a pretty big spread. But, where the above spreadsheet shows the 280AI outperforming both the 300wm and 7mmWM in its down range ballistics, plus having a 13 ounce weight savings... that does suggest the 280AI is a viable alternative to those two calibers if weight is of a primary concern. It is to some folks, not as much to others.</p></blockquote><p></p>
[QUOTE="packgoatguy, post: 1556792, member: 27192"] My assumption regarding barrel length, is simply that ALL cartridges will benefit from additional barrel length, and all will suffer from less barrel length, so to pick a different barrel length for the comparison would require the same rifle platform shooting 15 different cartridges. When cartridge manufactures test their cartridges, they pick a "standard" barrel length (in this case, 24 inches) that they will use to test all of their cartridges against, to keep all things equal. It would not be fair to the analysis to put a 28 inch 280AI barrel against a 24 inch 28Nosler, and visa versa. Both cartridges can benefit from the increased barrel length, and probably in fairly equal degree, so to show velocities at all barrel lengths, when trying to compare cartridges side by side does little but add additional data points. However, if someone can point me to verifiable data that would suggest some of the included cartridges in this comparison are susceptible to a greater velocity increase than other cartridges (in some significant degree), then that would be very interesting for this analysis. Your assessment about the ability to make a lighter weight rifle with the 280AI vs a larger 7mm is significant, and probably one of the most important, all else being equal IMO. However, it would be interesting to quantify it. For example... take the Kimber Mountain Ascent... I believe it is still the "lightest" factory rifle made: in the 6.5CM, 7mm08, and 308 the rifle weighs in at around 4lbs 13 ounces. For the 300WSM it weighs 5lbs 12 ounces. For the 280AI, it weighs 5lbs 10oz. For the 300WM/7mmWM it weighs 6lbs 7oz. That is all a pretty big spread. But, where the above spreadsheet shows the 280AI outperforming both the 300wm and 7mmWM in its down range ballistics, plus having a 13 ounce weight savings... that does suggest the 280AI is a viable alternative to those two calibers if weight is of a primary concern. It is to some folks, not as much to others. [/QUOTE]
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Spreadsheet to determine best long range hunting cartridge
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