Does anyone have any personal experience regarding the accuracy of PacNor's polygonal rifled barrels?

Thanks,


Jordan

Don't know about Pacnor but, have put several of Gary Schneider's polygonal barrels on for palma shooters. Most are very pleased.

quote:

Originally posted by eddieharren:
Don't know about Pacnor but, have put several of Gary Schneider's polygonal barrels on for palma shooters. Most are very pleased.

I've read where folks claim increased velocities with this type of rifling. Is this true?

Are they priced about the same as standard rifling barrels?

More info from personal experience would really be nice. I'm looking at Pac-Nor for a poly-barrel rebarrel.....with similar lack of info. Prices are the same as far as I can tell. Other threads here indicate some increase in MV, less bullet deformation improving actual BC, but also more potential for pressures to peak earlier. Cast bullets may be problematic depending on who you listen to....sure would like more first hand accounts myself.
I did notice they recently added one in .375 caliber....

Cheers,

Dan

quote:

Originally posted by Dan H:
but also more potential for pressures to peak earlier......

Cheers,

Dan

I dont see that as a problem,cause it means things are working more efficiently,yes?.
The other way to have a better seal between barrel and bullet is to use something like GScustomsHV banded monometals. I do believe that a HV bullet/conventional bore will give the same seal effect with less pressure peak than the combination of a conventional bullet/ polygonal bore, cause of far less contact area that the HV offers.
The third type combination of HV/polygonal interests me also,but testing has not been done by GScustom.(i asked). No reason why an individual cannot find out for himself.
But For the guy who wants to use more regular pills,I see the polygonal feature as a viable option. I am looking at one for 30/06 and have made enquiry with LotharWalther,Pacnor,Broughton. they all state vel. increases with their product varying 50-100fps for 165-180gn 308win(24").
Other advantages stated were longer barrel life due to better sealing and less fouling.
I dont see it as a scam,I see no reason for companies like LW to market BSht to people, they have to fine a reputation.
Early H&K poly barrels qouted vel. increases of 5% for 3o8win military. Those companies above are not claiming that much.
Heres email to Lothar:


----- Original Message -----
to: lotharwalther@mindspring.com
Sent: Tuesday, July 25, 2006 8:51 PM
Subject: Polygonal barrels


To whom it may regard,

I am aware that your company manufactures Polygonal barrels

I am to understand that polygonal rifling has certain advantages, one being, increased muzzle velocity.
Would you be able to indicate what typical velocity gains one could expect for the 308win(165-180gn)with 24"polygonal barrel?


From : Woody Woodall <lotharwalther@mindspring.com>
Sent : Wednesday, July 26, 2006 1:54 PM
Subject : Re: Polygonal barrels


We have been making polygon barrels since 1992.

A general rule of polygon is that velocities will be slightly higher. In your stated situation, 50 fps to around 100 fps. This is normally with military ball powder. In the sporting world, where there are various types of powders, this is not necessarily true. There are colder powders and the velocity can be reduced. Other factors will do this also.

The polygon barrel, both the male version and the female version both do the same thing. Seal the barrel against gasses bypassing the bullet. The result of this is the longer barrel life.

If you intention is to buy a polygon to garner a bit more velocity, then you are not using the product correctly.

Sincerely,

Woody Woodall.
(end email)

WJ.