bikemutt
Member
I have an AR57 upper which I've been underwhelmed with so far concerning accuracy. I guess I expected sub-MOA, or at least MOA out of it. Some groups will hold together decently then one round just disappears, can't find a hole.
I'd already posted up about how poorly it shot with a suppressor attached. I gave up on that for now and replaced it with both the OEM flash hider and a Seekins brake.
I was getting ready to take it the range today when I noticed how scruffy-looking the crown is; it rough enough that running a thumb over it will cut the skin. I tried to get a close up picture which seems to more or less allow me to share what I'm seeing in person.
I'm a novice rifleman so I always blame the shooter first but, this is not a hard kicking rifle, the AR15 lower has a very nice Geissele two-stage trigger installed, and I'm using premium FNH 40 grain ammo. The upper is scoped with a nice piece of 3-9x40 Nikon glass.
I don't have proof-positive of this yet but the same upper with a 6" barrel strikes me as more accurate than this 16" upper.
Could a rough crown like this affect accuracy?
Thanks THR.
I'd already posted up about how poorly it shot with a suppressor attached. I gave up on that for now and replaced it with both the OEM flash hider and a Seekins brake.
I was getting ready to take it the range today when I noticed how scruffy-looking the crown is; it rough enough that running a thumb over it will cut the skin. I tried to get a close up picture which seems to more or less allow me to share what I'm seeing in person.
I'm a novice rifleman so I always blame the shooter first but, this is not a hard kicking rifle, the AR15 lower has a very nice Geissele two-stage trigger installed, and I'm using premium FNH 40 grain ammo. The upper is scoped with a nice piece of 3-9x40 Nikon glass.
I don't have proof-positive of this yet but the same upper with a 6" barrel strikes me as more accurate than this 16" upper.
Could a rough crown like this affect accuracy?
Thanks THR.