Calhoun,
Thank you.
I bought the adjustable [Crescent type] wrench set from Harbor Freight

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=751

I put a 20" Shilen select match 6mmPPC benchrest take off barrel on a 1917 Sav 99 250S take down. I reamed out the chamber to 6mmBR.

The 24" wrench worked well.