Re: The 6mm BR
My version of the 6br is called a 6br tejas. It is nothing more than a standard br with a 40 degree shoulder and a very, very slightly longer body. It keeps the neck/shoulder junction in the same place thus leaving the signature long neck of the standard br. ALl in all, it only holds about 1.6 grains more powder than a standard br, and holds about 1.4 less grains than the popular 6br dasher. I have called my gun a dasher before on this site just so people could understand what it is because no one has ever heard of a Tejas, and they are so close to the same thing.
I believe you will lose about 50-75 fps to my Tejas if you go with the standard br. In reality, it isn't that big of a deal. Put a fast twist barrel on it and shoot 95-107 vld's out of it and it will scare you how far it will go!
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Will it still be a 1k plus gun or not?
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YES! My 95 grain Berger Vld's at a velo of 3030 stay supersonic out to about 1500 yards! I have not found anyother cartridge/bullet combo out there that can do this in such a nice package while only using about 31 grains of powder! A 6x47 (6mm-222 mag) fast twist will use slightly less powder, but it drops the velo down low enough that it negates the benefits of the heavier bullets.
The fast twist 22 caliber guns shoot well, but the bc of the bullets is not as high as the 6mm's and you need to burn 5-10 grains more powder to get the velo up to compenstate for a full one point bc loss.
The next biggest caliber is the 25's and they suffer from bc's that are not as high as they should be (unless your using Richard's Wildcatters bullets). For instance, one of the highest bc factory bullets for 25 is the Berger 115 VLD. It requires a 10 twist and has a bc of .522. The 6mm Berger 95 grain VLD has a bc of .524. It takes a lot less powder to get the 95 up to sufficient velocity than it does the 115. So again, the 6mm would be better for all the things you mention.
Don't get me wrong, the 115 vld is a very potent combo when teamed with a larger capacity case such as the 25-06, but you burn almost 20 grains more powder to get it to go fast enough to "out-ballistic" the 6mm. OLD bear has a 25-06 loaded with the 115 vld's and I have spotted for him on 1300 yard chuck shoots and I was very impressed with the performance, but he never took a shot that my 6br Tejas wouldn't do!
When you get to the next caliber, you find that the 6.5mm do offer much higher bc's than the sixes, but they need more powder as well. In really nasty switch wind conditions, my 6.5-.284 is a better 1k cartridge than the 6br, but then it boils down to how well the "driver" can steer the bullet. When I built my 6.5, it was for 1500 yard hunting. At that range it offers significantly more improvement over the 6br than it does at 1000.
Anyway, I think you will love the 6 if that is what you go for.
good shooting! [img]/ubbthreads/images/graemlins/wink.gif[/img]
If it's not far, it's boring.