barrel contour?

ok i have looked high and low for the stock Measurements on my 112 bvss 300 winn mag.i am wanting a shilen replacement barrel in the same contour but i am not close to the gun to messure it and will not be for a few weeks.any help will be very helpfull thanks. i wanting to go from 300 wm to 25-06 ai. i no i have to change bolt head also.

...order a varmint .830 at the muzzle...

Yup! You just need their standard varmint contour, which should be about the .800-.840" range.

i might get me a new santa present... ;D

You will enjoy your 25-06 AI. Just remember RL22 and the 100 gr bullet of your choice.