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What is the real BC of the 240MK?

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Unread 11-08-2005, 08:49 AM
CAM CAM is offline
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Join Date: Jan 2002
Location: Utah
Posts: 385
Re: What is the real BC of the 240MK?

I knew sooner or later you would rebarrel or start over, LOL
what twist and make is the barrel? 3 or 4 groove?
I've never even picked up my accumark after receiving the custom!
keep us posted
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Unread 11-08-2005, 11:58 PM
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Join Date: Dec 2001
Location: Pennsylvania
Posts: 230
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)
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Unread 11-11-2005, 10:47 PM
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Join Date: Dec 2001
Location: Pennsylvania
Posts: 230
Re: What is the real BC of the 240MK?

24.5 MOA to 1100. (15mph wind from 10oclock, 3150fps, 40 degF) Kept dropping BC in Exbal until it lined out with my 500 and 1100 as shot and came up with .640 for the BC. Verified what JonA was telling me all along.
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