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Posted: 12/9/2010 4:10:53 PM EDT
| i was just wondering this, i've always heard that little smooth space between the conversion kit and the rifled barrel degrades accuracy when it has to jump from smooth to rifled. Would rifling that space improve accuracy? Or would it even make a difference? Or is there some reason it cant be done. it seems to me that it wouldnt be that big of a deal to put grooves in that space other then a added step to the manufacture of the conversion kit. just wondering. Thanks |
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I had heard that the Air Force Conversion has rifling. I've never even held one.
I wonder if it's 1:12" or 1:14". It should be one of the 2 to match up with early M16's / AR's of the period. The Air Force actually bought into the original AR-15's. IMHO the rifling may be more detrimental than having no rifling. It's assured that the rifling in the chamber adapter won't line up with rifling in many of the rifles it's used in. Even if they have the same twist rate. It may have been a key selling point for the Air Force but we don't see anyone doing it on what they sell now. At one time, I wanted to open the freebore of the 22 chamber adapter from 0.221 / 0.222 to 0.224. Federal and several other manufacturers 22's measure 0.223 / 0.224 when the bullet is crimped in the manufacturing process. After really thinking the whole idea over, I opened one up. It didn't make any difference or it was so minuscule that it didn't matter. Just my thoughts, Dave |
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I have often felt that it is a wonder that the bullet can shoot worth a crap after doing that 2" or so jump to a barrel that is all the wrong twist ????
Seems you would get lots of blow by with the unrifled portion being sort of loose Best I can come up with is the bullet takes a leep and due to low friction gets a pretty good velocity so that when it slams into the rifeling it mashes down (obutrates?) and gets a real good grip on that nasty wrong twist rifeling ? |
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