Hi, I'm looking for a 5 groove pattern with the lands and grooves dimensions. If someone has something I can use as reference, or a formula to start with I'd appreciate it very much! Thank you!
Hi, I'm looking for a 5 groove pattern with the lands and grooves dimensions. If someone has something I can use as reference, or a formula to start with I'd appreciate it very much! Thank you!
I am aware of it being non standard. I need some kind of starting point to work from.
The best starting point is the particular barrel maker those 5-groove rifling you are interested in...
The only generalization one can make is the groove diameter will be around .2235" to .2245", and that's not necessarily guaranteed.
If you want to learn about 5-R, talk to Obermeyer....
If you want to learn about 5 groove polygonal rifling talk to someone that makes it...
etc...
etc...
Last edited by lysander; 10-21-15 at 12:10.
Start with this
http://www.saami.org/pubresources/cc...0Remington.pdf
It gives the basic bore and groove dimensions along with the minimum bore area.
At a constant bore area, the reference of 6 grooves at .074" width translates to 5 grooves at .089" width.
The minimum bore area is important because it relates to the land-groove width ratio.
Last edited by Clint; 10-21-15 at 17:26.
Black River Tactical
BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
BRT Bolt Carrier Groups M4A1, M16 CHROME
BRT Covert Comps 5.56, 6X, 7.62
Thank you gentlemen, I now have some data to work with.
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