B 92 .44 Mag. groove diameter

1886 · Post by **1886** » Thu Jan 10, 2008 9:44 pm

Anyone have a Centennial, 1978, B 92 .44 mag? Have you slugged the bore? Can you share your findings please? Thanks. 1886.

jd45 · Post by **jd45** » Thu Jan 10, 2008 10:06 pm

I used to have one, & if IIRC, mine slugged out to .431-1/2. As you may already have found out, the rifling appears to be similar to Marlin's Micro-Groove rifling. I had the barrel trimmed to 16" & even after that, I was able to group my load, which was 21grs of H110 under a Hornady 265FP, designed for the .444, into 1-1/2" @ 100yds off the bench, your slugging results might be different, tho, so I suggest you do yours. BTW, I'd be interested to know what your dimension turns out to be, & if my memory is accurate. Thanx, jd45

Windjammer · Post by **Windjammer** » Sat Jan 12, 2008 12:58 pm

I have one that is unfired, for sale. Why would the groove diameter be any different on the centennial than the standard?

bmyers5229@bellsouth.net

Post by **Hobie** » Sat Jan 12, 2008 1:35 pm

Windjammer wrote:I have one that is unfired, for sale. Why would the groove diameter be any different on the centennial than the standard?

bmyers5229@bellsouth.net

Some Centennial parts are dimensional different from the parts on the later released "standard"...

J Miller · Post by **J Miller** » Sat Jan 12, 2008 2:18 pm

Windjammer wrote:I have one that is unfired, for sale. Why would the groove diameter be any different on the centennial than the standard?

bmyers5229@bellsouth.net

Manufacturing tolerances also play a part in the variations.

Joe

old goat · Post by **old goat** » Sat Jan 12, 2008 2:31 pm

Hobie,

...That's interesting. Do you remember, off hand, which parts were different?

...old goat