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1/2 round-1/2 octagon question

roysha
I have used the term, 1/2 round and 1/2 octagon in describing a barrel contour, rather indiscriminately most of my life. Now I want to build a rifle with one and I realize I didn't really know what I was saying. Most appear to be NOT 1/2 and 1/2.
It appears that generally the octagon portion is as long as the fore stock but I have seen both longer and shorter. Is there a generally accepted rule for this or does one just make it to suit one's own eye?
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Comments

3 comments

Date Votes
  • asphalt cowboy
    From my experiences there is no hard and fast rule. The length of the forearm will generally dictate the length of the octagon though.

    If you haven't contacted a shop yet, Al Story has done some outstanding barrels for me.
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  • Bert H.
    Factory original Winchester 1/2 octagon barrels were made to be slightly longer than the forend stock (1/4" - 3/8"). Winchester always moved the barrel address stamp to accomodate the length of the octagon section of the barrel.
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  • SP45
    It's mostly based on what lis visually appealing. I did the same thing a couple of years ago with a 30" barrel and settled on about the first third octogon with the remainder being round.
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