I don't recommend the ballistics chart unless you have printed it out for that particular location on that particular day. At long ranges you need to take into account air temperature, elevation, slope, and precise muzzle velocity.
At 700 yards with .308 Federal Match 175 grain, at sea level, the difference between 40 F and 90 F is over eight inches. Add in all the other variables and the chart is only good enough to be within the field of view for your spotter.
Might I suggest that you have the finish done by Walt Birdsong(W.E. Birdsong & Assoc.)? He will do a rifle in his Black-T finish for $198 +$20 for return shipping. His finish goes on everything down to the springs and screws - without causing a measurable dimensional change - (not the bore of course). As a reference I have his finish on the muzzle brake of my .50BMG rifle and haven't managed to shoot it off yet.
The best part of the operation is calling the place and his answering the phone. If you are a fast talker and a good listener, you might be able to hang up 20 minutes later.
No, no can. If it doesn't make the rifle shoot better I'm not really interested. And I have some Peltor 6S muffs, so the noise doesn't really bother me.
Please give us a good review of Ultra Bore Coat. It's so new that the only reviews I can find online are just cut-and-pasted from the manufacturer. A good dose of unbiased reality would do wonders.
Handloader magazine had a piece on it a couple of months ago. I can't find that issue right now, but the conclusion of the author was that it really did work. It didn't affect accuracy, but it did make cleanup much, much easier. I decided right then I needed to try it. Now I have a rifle that justifies the need.
I have a 31-year-old Model 70 and a 2-year-old Kimber that would make good test beds. Both are accurate, so I don't want to mess with what works. I look forward to your conclusions.
The temperature differences I mentioned don't even include the differences you see from powder burn rate changes. But if you use Varget or anything in Hodgdon's Extreme Series that issue goes away.
It's the enviromentals that make the calculator and "all the bells and whistles" necessary. Tilt and slope make large differences too. Check out Modern Ballistics to see for yourself (it assumes tilt is zero however--it can be made zero if you have the bubble level).
Have you considered the splendid conversion to accept M14 mags? Seems to me like Robar does that. I saw a 700 in SWAT mag a year or two ago with a MC Bros folding stock that had the treatment. IIRC, I think Leroy owns it.
Excellent choice in rifles. I want, I want...but must wait for $$$. I'll be looking forward to your reports on the finish/optics/etc. That will really help when it comes my turn.
Nice! :)
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JS-Kit/Echo comments for article at http://smallestminority.blogspot.com/2007/11/cha-ching.html (14 comments)
Tentative mapping of comments to original article, corrections solicited.
It's only money, and it doesn't matter because this is America, where you can go out and earn some more.
Yes, but the problem with this hobby is it tends to interfere with those frivolous expenditures, like home maintenance.
I don't recommend the ballistics chart unless you have printed it out for that particular location on that particular day. At long ranges you need to take into account air temperature, elevation, slope, and precise muzzle velocity.
At 700 yards with .308 Federal Match 175 grain, at sea level, the difference between 40 F and 90 F is over eight inches. Add in all the other variables and the chart is only good enough to be within the field of view for your spotter.
Wow! Eight inches! I would never have guessed!
Might I suggest that you have the finish done by Walt Birdsong(W.E. Birdsong & Assoc.)? He will do a rifle in his Black-T finish for $198 +$20 for return shipping. His finish goes on everything down to the springs and screws - without causing a measurable dimensional change - (not the bore of course). As a reference I have his finish on the muzzle brake of my .50BMG rifle and haven't managed to shoot it off yet.
The best part of the operation is calling the place and his answering the phone. If you are a fast talker and a good listener, you might be able to hang up 20 minutes later.
What no suppressor??!!! you could shoot it w/o muffs and get reduced recoil in the bargain.
No, no can. If it doesn't make the rifle shoot better I'm not really interested. And I have some Peltor 6S muffs, so the noise doesn't really bother me.
Please give us a good review of Ultra Bore Coat. It's so new that the only reviews I can find online are just cut-and-pasted from the manufacturer. A good dose of unbiased reality would do wonders.
Handloader magazine had a piece on it a couple of months ago. I can't find that issue right now, but the conclusion of the author was that it really did work. It didn't affect accuracy, but it did make cleanup much, much easier. I decided right then I needed to try it. Now I have a rifle that justifies the need.
I will report, however.
I have a 31-year-old Model 70 and a 2-year-old Kimber that would make good test beds. Both are accurate, so I don't want to mess with what works. I look forward to your conclusions.
Very interested in the Bore Coat findings.
And I didn't think the temp would make that much difference, either.
The temperature differences I mentioned don't even include the differences you see from powder burn rate changes. But if you use Varget or anything in Hodgdon's Extreme Series that issue goes away.
It's the enviromentals that make the calculator and "all the bells and whistles" necessary. Tilt and slope make large differences too. Check out Modern Ballistics to see for yourself (it assumes tilt is zero however--it can be made zero if you have the bubble level).
Have you considered the splendid conversion to accept M14 mags? Seems to me like Robar does that. I saw a 700 in SWAT mag a year or two ago with a MC Bros folding stock that had the treatment. IIRC, I think Leroy owns it.
Regards,
Rabbit.
Excellent choice in rifles. I want, I want...but must wait for $$$. I'll be looking forward to your reports on the finish/optics/etc. That will really help when it comes my turn.
Nice! :)
Note: All avatars and any images or other media embedded in comments were hosted on the JS-Kit website and have been lost; references to haloscan comments have been partially automatically remapped, but accuracy is not guaranteed and corrections are solicited.
If you notice any problems with this page or wish to have your home page link updated, please contact John Hardin <jhardin@impsec.org>