Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Reply

Which groove is best?

 
LinkBack Thread Tools Display Modes
  #1  
Old 04-29-2012, 01:08 PM
Silver Member
 
Join Date: Sep 2009
Location: Chambersburg, PA
Posts: 296
Which groove is best?

I was cruising around on Pacnor's website looking at what they had available. What are the major differences in grooves per barrel. I know most barrels are 6 groove, but what would be the major benefits of using a 3 groove system. The only thing I can determine is it would reduce the rifling print on the bullet which would decrease the drag it creates while spinning through the air. What are the restrictions of a 3 groove 1-8 twist if any? Just hoping to pick your brains. Thanks in advance.

Barry

6mm (.243")3 groove
7"
8"
9"
10"
11"
12"
13.25"
14"
4 groove
7.50"
8"
8.60"
13.75"
14"
5 groove
5"
6"
7"
9"
12"
13"
15"
16"
6 groove
9"
10"
Polygonal
8"
9"
10"
Reply With Quote
  #2  
Old 04-29-2012, 08:12 PM
Platinum Member
 
Join Date: Dec 2008
Location: Great Falls, MT
Posts: 4,922
Re: Which groove is best?

Here's what Dan Lilja comment on 3-groove barrels ... Lilja Precision Rifle Barrels - FAQ
__________________

I voted for my "FREEDOM", "GUNS", and "MONEY" - keep the change - UNK.



"I am always proud of my country!"

"Leadership Rule #2: Don't be an @zzhole." - Maj Gen Burton Field.

Last edited by FEENIX; 04-29-2012 at 08:48 PM.
Reply With Quote
  #3  
Old 04-29-2012, 11:49 PM
Platinum Member
 
Join Date: Dec 2005
Posts: 2,114
Re: Which groove is best?

With 30 caliber barrels used in competition, 5- and 6-grooved ones typically shoot 160 to 220 grain bullets most accurate. 4-groove ones are favored for 145 to 155 grains. And either 3- or 4-groove ones do wonders with the 135-grain bullets used in benchrest matches. And there will be a few exceptions.

I don't know about smaller calibers, but my guess is they're much the same
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Which groove is best?
Thread Thread Starter Forum Replies Last Post
30 cal bore groove robbor Rifles, Bullets, Barrels & Ballistics 3 05-19-2009 07:32 AM
3 groove Barrels J E Custom Rifles, Bullets, Barrels & Ballistics 38 01-27-2009 04:59 PM
3 groove or 6 groove - 25-06 AI Petersen Rifles, Bullets, Barrels & Ballistics 7 02-26-2008 12:53 AM
.22-250 Groove # and twist davkrat Rifles, Bullets, Barrels & Ballistics 2 05-21-2007 05:45 PM
Pac-Nor 3 groove 7mm CraigB Rifles, Bullets, Barrels & Ballistics 2 11-14-2006 12:28 AM


All times are GMT -5. The time now is 06:47 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC