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Stay away from the calculator!! You cannot compare ballistics on paper . . .
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Hey, check this: After a decade of no guns at all, I get back to one of my old pursuits. I set a target at some arbitrary range, do the ballistic calculations for range and atmospheric conditions, and take one shot. Now with my new Nikon laser rangefinder (!) and ballistics software on my PDA (!!) I set my water jugs out in the field at 500+ yards, make my measurements, calculations, click-click-click -- BAM----splash. That blows me away, never was able to do that before. So don't be disparagin' the ol' calculator to me [img]/ubbthreads/images/graemlins/smile.gif[/img]
But yes, I have heard the siren song of the 308.
The 260 Rem never existed when I last checked, so that has me intrigued. Back then I was wishing someone would make good bullets for the 6.5x55, as it looked really good ballistically. Now in '05 I find the well-established 260. Go figure.
Here is an interesting thing I found in my travels, a sreadsheet that estimated barrel life, assuming 30 to 60 seconds cooling between shots:
You will probably have to copy and paste the URL in a browser window, since the site does not allow direct links.
It is just a "rule of thumb" kind of thing for competition shooting, but shooters' reports of barrel life over at www.long-range.com
(that's where I found it) seem to agree pretty well. I just had that darned 308 out of my head and then found that info. It argues pretty strongly against the 6mms larger than BR.
Now I'm thinking 260, 7-08, or 308. DOn't know what I'd do for 30-cal bullets. Maybe 168-gr Berger VLDs, if the BC is actually that good.
Thanks for all the help, it's great to have all the input.