|
Forum Rules | Firearms Safety | Firearms Photos | Links | Library | Lost Password | Email Changes |
Register | FAQ | Calendar | Search | Today's Posts | Mark Forums Read |
|
Thread Tools | Search this Thread |
April 26, 2013, 07:20 PM | #1 |
Senior Member
Join Date: May 12, 2011
Posts: 863
|
M-4 rifle style- new to me
I tinker with surplus and used optics at times in the shop. A buddy wants one of my used scopes installed on what looks like a Colt M-4 style rifle. Markings include Mckay Enterprises, LLC, 5.56mm, FirePower, Speed, M&S Armament.
The application is coyote hunting, 100 to 200 yards. Any experience out there with this rifle pro or con? Any idea on rate of twist and suggested bullet weight for best accuracy? |
April 27, 2013, 12:58 AM | #2 |
Member
Join Date: August 12, 2010
Location: Cincinnati, Ohio
Posts: 28
|
Don't mean to be a jerk, BUT... It's an AR, man. Fire 55 grain with confidence, and try to utilize Google for further research into what seems to be a frankengun (take no offense, please... No shame in a combo build at all.)
|
April 27, 2013, 06:18 AM | #3 |
Senior Member
Join Date: April 23, 2006
Location: South Texas
Posts: 2,010
|
It's easy enough to measure the twist with a tight patch on a cleaning rod and a ruler. I make a little "flag" with a piece of tape and measure how long it takes to make a 360.
|
May 4, 2013, 10:36 AM | #4 |
Senior Member
Join Date: May 12, 2011
Posts: 863
|
I know I can test the twist rate myself. But the initial question remains:
21 variations in ammo, way different performance results, shorter & longer barrel lengths, and of course the different twist rates and nobody has experience to share or suggestions on what they may have found pro or con? |
May 4, 2013, 01:04 PM | #5 |
Senior Member
Join Date: August 5, 2010
Location: West Coast...of WI
Posts: 1,663
|
Generally, the slower rate rifling likes lighter bullets, and tighter rifling likes heavier bullets.
Once you figure out the twist rate, then narrow your selection of ammo to the range in bullet weights. From there just start experimenting, that's the fun part
__________________
NRA Life Member, SAF contributor. |
May 4, 2013, 01:50 PM | #6 | |
Senior Member
Join Date: December 20, 2012
Location: Sweet Home
Posts: 886
|
Quote:
The rate should be on the barrel somewhere. I am surprised it is not readily visible.
__________________
Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday. |
|
May 4, 2013, 04:47 PM | #7 |
Senior Member
Join Date: June 17, 2010
Location: Virginia
Posts: 6,869
|
Standard "M4" styles these days are "generally" 1-9.
Will take anything from 52-69gr. Split the difference at 60-62gr and press on. |
Thread Tools | Search this Thread |
|
|