I bought a new M700 Varmint in 243 and I really didn't want a 243, I have a Shilen 6mm 1 in 8 barrel I was going to chamber it on.

How big of a pain in the ass is it to cut off set back and rechamber the 243 to 6mm BR Norma when they install and chamber the Shilen barrel?

The 700 is a 243? The Shilen barrel is unchambered? Or is it a 243"?

The 6MMBR is .5" shorter than the 243. If the barrels is a 243 if you have enough shank go for it. If unchambered go for it.

As to feeding from the 700 I have no experience.

It has the new original barrel on it.

I'd like to true the action and cut off and set back the original 243 barrel to 6mm BR Norma.

Then unthread it and fit the Shilen.

That way the Shilen is already fitted, and when I run through the factory barrel I am set to go. Or if the factory barrel is junk.

Your time your $$. If you can set the barrel back the fit in the stock will probably not be that great. The Shilen will probably be different still.

For my $$ pull the factory barrel leave it as a 243 and sell it. Mount the Shilen and go shooting.

And on top of that, when you do true the action, and if done correctly, the original threads may not fit, would be a sloppy fit and you would have to cut off the original threads and wouldn't have enough shank left. Besides, how long will it take you to shoot out the new 6BR?

I am an F-Classer I doubt it will make it to Christmas 2015.

quote:

Originally posted by Jim Kobe:
And on top of that, when you do true the action, and if done correctly, the original threads may not fit, would be a sloppy fit and you would have to cut off the original threads and wouldn't have enough shank left. Besides, how long will it take you to shoot out the new 6BR?

quote:

I am an F-Classer I doubt it will make it to Christmas 2015.

With a 6BR?

Can't see using a set back factory barrel in F Class.

I finally measured it, it doesn't really have enough steel in it to cut off and set back anyway.

F-Class is like fullbore. Not shooting for group, shooting for score. Groups are nice, but technique is more important than group.

I am pretty far out of practice, it's been 18 months since I shot a match (and a continent away).

Using a 243 M700 Varmint because I could afford the rifle, bought a close out Shilen blank for $150 with plans to put a 6mm BR blank on the 243.

I have tons of 6mm BR Lapua brass, so that's why I am leaning that direction. And Redding competition dies.

Just thought you needed a touch more horsepower than the 6BR. I hear people talking the 308 being marginal. Never shot it so speaking from only second hand.

Didn't know Remington used eight twist in their varmint .243. You'll need that to stabilize 105's. 6br works fine from 600-1000 but the are more forgiving options, the Dasher being one. Probably be a better use of powder and expensive bullets to chamber the new barrel. That is a challenging target.

Built a few 6BRs. They sure don't always feed well.
Mike Bryant's website has a step by step story on how to help it feed, if his website is still up. Mike was fortunate enough to retire and travel around doing what he wants to do.

Try this:

http://www.6mmbr.com/Rem700magfix.html

quote:

Originally posted by Big Wonderful Wyoming:
I am an F-Classer I doubt it will make it to Christmas 2015.

We shoot F class in Cuyama, CA every month. But that's 50 miles west of me so it would be a long drive for you.

quote:

Originally posted by butchlambert:
Try this:

http://www.6mmbr.com/Rem700magfix.html

Tried that one............ I still ain't got it to feed reliably.....might just be me though....

For the OP's use I would go with the XC or Dasher though.....


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It is funny. One doesn't feed well and the others did with the same mods, Go figure.

Most likely my typical good luck.......



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Consigned it at the local shop. Downsizing and reallocating funds for 700 clone actions.

Thanks to everyone that posted.