Eskimo36,
in conjuction with the post above, I just contacted my gunsmith and he told me that the barrel blank used was a Pac-Nor with a 1-12" twist rate. This barrel also has five raised lands.
My load of choice is as follows -
Norma 9.3X74R brass
Most accurate bullet was the Hornady 286 grain spire point
Primers used were Federal Gold Medal Match large rifle primers - standard
Best powder was Hodgdons 4895 with a measured weight of 53.0 grains
Velocity from my gun when clocked on an overcast day with a temperature of 69 degrees was 2,292 feet per second. Velocity was checked with 5 shots in a row and between all 5 shots, there was only 12 feet per second difference between them.
When shot from prone position with a bi pod in the front and sand bag in the back, 100 yard groups averaged one to one and a half inches for five shots but at 50 yards all bullet holes touched. I think i could have shot better at 100 yards if i had a bigger scope and better eyes. I did however choose that particular scope because of its big eye relief and big field of view.
Other bullets tried in this gun were the speer 270 grain semi spitzer / the nosler 250 grain accu bond / norma 286 grain / barnes 250 grain triple shock. Most of these other bullets would shoot around 2 1/2 to 3 inch groups at 100 yards but this particular gun just happen to like the hornady bullet the best as far as accuracy went and when it smacked my bull elk at a laser range of 112 yards, the bull just stood there for about 5 seconds after the shot, took three steps, stopped again and fell in a heap. The bullet broke one shoulder and busted the heart and both lungs. I think he was actually dead before he hit the ground, if thats possible.
