04-13-2017, 04:19 PM
Just having a poorly-cut or ragged gas port in the bore most certainly will affect accuracy, and I've seen it first hand with an SPR barrel that was select match Douglas.
If port erosion changes the geometry of the port, and metal is galling into the lands, it will have unbalanced drag on the jackets as they pass through that portion of the barrel.
Everything I have seen and heard from smiths that look for the utmost accuracy in AR15s indicates that they take time to make sure the port geometry is carefully cut, cleaned, and positioned in the land.
If port erosion changes the geometry of the port, and metal is galling into the lands, it will have unbalanced drag on the jackets as they pass through that portion of the barrel.
Everything I have seen and heard from smiths that look for the utmost accuracy in AR15s indicates that they take time to make sure the port geometry is carefully cut, cleaned, and positioned in the land.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com