Re: What is the real BC of the 240MK?
Yep, Mark V started out life as an Accumark. A couple of years ago it earned a Tooley MBR stock. Had a blast with it but wanted a bit more weight and barrel mass. Hart Long Heavy Varmint installed now. 16.1 pounds total with a 8.5 LRT.
Its a boring 6 groove 10 twist. Same barrel as I have on my 300 Wby, which happened to print a carbon copy (1.77)three shot group at 500 tonight. It took 9 MOA to do it though with 220 MK's.
I probably would still be shooting the Accumark barrel if I didn't have an itch to run the Wby action at a match or two next year. A couple of things were against it. It liked the 200 Accubonds best and while it was a 3 or 4 shot clay busting, chuck smacking SOB, the accumark contour couldn't take the heat required for 10 shot matches. About 7 shots and groups start to open and after making up my mind to rebarrel I found that 23 made things very, very bad.
Will let you know what I come up with at 1100 later this week.
HoytemanPA (Back in my 3D bow days)