Polygon Barrels?

[averagejoe]

Well, I saw this on another forum.. http://airgunpelletmaker.weebly.com/ and was wondering if he could make one to make polygonal pellets...

You might find this article interesting. It has great accuracy potential. http://firearmshistory.blogspot.ca/2...whitworth.html

[rsterne]

.308 cal. LW 28".... check....
9mm LW 28".... check....

Sitting on the shelf awaiting the big bore version of my Hayabusa.... Maybe by the time I get around to it (next winter) JSB will have released their Exacts in those two calibers....

I'm delighted that Eric is now an LW Dealer.... It took me over a year to get my LW barrels.... I will gladly purchase them from him in future....

Bob

[SeanMP]

I think a 9mm/357 sitting on an AR2078 action might be a fun little plinker

[rsterne]

Relatively easy to do if you want a non-PAL gun I would think.... I did a Disco based 9mm Carbine and got 9-10 shots averaging 480 fps (78 gr. EunJins) with a Disco spring and transfer port (although the valve exhaust port was hogged out a bit).... Based on the volume of a QB78 tube, about 6 shots should be possible.... A poly transfer port and a bit of valve work?....

Bob

[SeanMP]

I was thinking oversized Cromoly tube, PAL version.

[rsterne]

Ala Jack Haley's beasts?....

Bob

[SeanMP]

Wow...That's cool.

I didn't even know he existed.

Yes I guess very much like like Jack Haley's beasts...only BIGGER

[rsterne]

I think he makes QBs all the way up to .58 cal.... and you want BIGGER?!?!?

Bob

[rsterne]

BTW, I saw pics of the tins for the big bore JSB Exacts.... The .30 cal is 46.3 gr. and the 9mm is 77.6 gr....

That puts them similar to a scaled up 25.4 gr. Exact King .25 cal.... Exactly scaled (cubed) that would be 47.5 gr. and 74.0 gr.... Of course the SD is higher with the larger calibers, so the BC should go up....

Bob

[SeanMP]

Oh ya...wicked.

I only saw up to 32 cal on his site but it was plastered with "underconstruction"