Match grade polygonal barrel

Oldjarhead · June 21, 2018, 01:15 PM

Is a polygonal match grade barrel (like some Kahrs) any more accurate than a conventional match grade barrel, on say a Kimber 1911?

std7mag · June 21, 2018, 01:32 PM

Short answer. No

A polygonal barrel is supposed to give a little more velocity. And if you want to shoot lead, there are some issues to be addressed.

Supposed to work well with monolith bullets. (solid copper)

Scorch · June 21, 2018, 04:52 PM

If they were significantly better, you would read about them winning all the matches and all the bullseye shooters would junk their old cut or button rifled barrels and buy polygonal rifled barrels. Lacking that bit of supporting evidence, I will have to agree that there is no superior quality that can be rightly attributed to polygonal rifling barrels.

dakota.potts · June 21, 2018, 08:10 PM

I have barreled a couple of match winning rifles with Schneider P5 polygonal barrels. Very accurate? Yes. Superior? Not to other premium match grade barrels

**Unclenick** · June 23, 2018, 09:45 AM

Hah! You meant the rifling. Never mind.

I know there have been issues with lead bullets stripping and plugging the corners of the polygon in some instances, so you might not want to use polygonal rifling with cast bullets.

June 21, 2018, 01:15 PM	#1
Oldjarhead Senior Member Join Date: July 4, 2008 Posts: 508	Match grade polygonal barrel Is a polygonal match grade barrel (like some Kahrs) any more accurate than a conventional match grade barrel, on say a Kimber 1911?

June 21, 2018, 01:32 PM	#2
std7mag Senior Member Join Date: June 23, 2013 Location: Central Taxylvania.. Posts: 3,609	Short answer. No A polygonal barrel is supposed to give a little more velocity. And if you want to shoot lead, there are some issues to be addressed. Supposed to work well with monolith bullets. (solid copper) __________________ When our own government declares itself as "tyrannical", where does that leave us??!! "Januarary 6th insurrection". Funny, I didn't see a single piece of rope...

June 21, 2018, 04:52 PM	#3
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	If they were significantly better, you would read about them winning all the matches and all the bullseye shooters would junk their old cut or button rifled barrels and buy polygonal rifled barrels. Lacking that bit of supporting evidence, I will have to agree that there is no superior quality that can be rightly attributed to polygonal rifling barrels. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

June 21, 2018, 08:10 PM	#4
dakota.potts Senior Member Join Date: February 25, 2013 Location: Keystone Heights, Florida Posts: 3,084	I have barreled a couple of match winning rifles with Schneider P5 polygonal barrels. Very accurate? Yes. Superior? Not to other premium match grade barrels __________________ Certified Gunsmith (On Hiatus) Certified Armorer - H&K and Glock Among Others You can find my writings at my website, pottsprecision.com.

June 23, 2018, 09:45 AM	#5
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,080	Hah! You meant the rifling. Never mind. I know there have been issues with lead bullets stripping and plugging the corners of the polygon in some instances, so you might not want to use polygonal rifling with cast bullets. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle