Originally Posted by
Semisane
Something else I forgot to mention guys.
The rifle was centering dead on the bull at 100 yards. But note that the group on the 200 yard target above is centered about three inches to the right of the bull. And the group on the 300 yard target is centered about six inches to the right of the bull.
I believe that's a result of the TC #9930 scope mount being a bit offset to the left of the center line of the bore. TC made them that way to provide clearance between the scope and hammer.
Please don't take this the wrong way.........
IMO I don't believe it had anything to do with the scope mount.
What I highly suspect is the wind moved those bullets. It doesn't take much wind, especially a right angle wind, to move that heavy slow bullet quite a distance.
Using my Strelok ballistic app, and not knowing the actual BC of your bullet, I started with .210. A 90° wind of 3mph can move that bullet 4" at 200yds. Using the same data at 300yds the bullet will move 8.6".
If I use a
BC of .300 and
using the same 3mph 90° wind, it indicates a 3" movement of the bullet at 200yds and a 6.3" movement at 300yds. Even using an almost following wind and a 3mph wind speed, at 200yds the bullet will move 2" and at 300yds the bullet will move just over 4".
I'm not claiming to be a long range professional but I've gained a lot of experience shooting to 400yds, and even more after shooting the Friendship match. Even the slightest wind will affect bullets beyond 100yds and the heavier slower bullets are affected more.