Tell us about the test rifle and it's sights or scope.

That group is good, but not outstanding. Now maybe the shooter is not capable of holding a 1 hole group with this rifle and load because of recoil, or maybe because of open sights, but it could also be because the twist in the barrel is not fast enough for such a long bullet.
I would be very interested in some follow up on this.
If the rounds would hold.....say.....5" at 200 yds I might want to buy some, but as of now we don't know what the "weak link in the chain" is.
Shooter?
Sights?
Barrel twist"
the bullet itself?
The lube?
there could be several others
Give us some details.

thanks
Steve