Sorry, perhaps a stupid question but I cant see how contour # convert to inches or metric. I just dont understand unless some of you can explain it to me.

For example, what meassures have a # 7 contoure?

Is there some converting factor from #:s to inches or metric mm?

My new barrels (.338 and .450) will be 22mm in the front and I guess 30-32 mm at the action side, what contour number would this be?

Feel a little stupid about asking but It seems that we dont use contour # here in europe. (I might be wrong)

Thanks

[ 03-26-2003, 16:03: Message edited by: Thomas M ]

Thomas,

Here is a link that will take you to Pac-Nor barrels contours. They are a big barrel maker in the US.

http://www.pac-nor.com/contours/

It is not really a fixed figure as it can differ between different makers.

Our major barrel maker in Australia follows Shilen (I think?). A barrel that is about .72" (18.3mm) at the muzzle of 26 inch barrel is called a Number 5. That is quite close to what Pac-Nor is using.

Now Weatherby is very different. They have Number 1 for their 24 inch barrel, Number 2 for 26 inch, Number 3 for the 30/378, 338/378,378 and 416 Weatherbys and Number 4 for the 460. The 460 is about the muzzle diamter of your barrel.

Some makers also have a different shape. For example a 416 Weatherby is around .7" at the muzzle which is about the same as our Australian barrel makers Number 5 barrel. However the Weatherby barrel is smaller at the mid way point.

Mike

Mike375

Just curious, it it MAB who is the biggest maker in Australia or ?

It there anyone makeing good cut barrels?

Thomas, barrels profile is a mess, most maker has their own profiles. H-S went the other way soo a 7 H-S is about a 3-4 from shilen. Best way is to find drawings of the barrels and compare.
Cheers
/ JOHAN

JOHAN

MAB might be, I don't know. I was referring to Tobler barrels in my post.

Sprinter barrels do cut rifling or at least they use to. Tobler were doing some as well but I think only in 30 calibre.

Mike

Ah!

Ok I wont think of it any more if it's not a standard thing.

Thanks!

Bdw, a benchrester I know said something about an Australian barrelmaker that makes (possibly) good BR barrels (or was it New Zeeland..?)

Thomas,

There are two barrel makers in Australia that do benchrest quality.....Tobler Barrels and Maddco Barrels.

Mike

Mike375

Do you have any contact info on these two makers. Prefer E-mail and websites.

Thanks

Cheers
/ JOHAN