Finally, I finished the "No name brand", 8X57, "98", drilling and tapping scope mount project, in which I simply bore sighted the correct alignment of the scope and mounts, then crazy clued the bases, removed the scope and mounts, and then marked the metal for drilling. Everything worked well.
The bore, was after a lots of cleaning, bright, but clearly worn, and slugging confirmed that.
However, shooting it in with Speer 200 grain bullet, 50 grains of IMR 4350, in formed 30-06 cases, yielded some interesting results:
At 50 meter I got a very tight group, measuring 0.535-0.735-0.800 spread, as long as I keept the barrel cooled down between shoot. With warm barrel, the bullets landed all over the place, due to the worn barrel expanding its diameter ?
Also, after sighting the scope at 50 meter, the 100 meter shoot landed almost at the same point of impact as the shoots at 50 meter.
The average velocity with above loads was 2170 fps and 2190 fp, which was less the advertised velocity in the Speer Reloading Manual # 11, again indicating the worn barrel ?
I am going to keep the barrel, since this "No name Brand 98" is a fine shooter, as it is, and few years ago, I fine tuned the double stage trigger as well
The bore, was after a lots of cleaning, bright, but clearly worn, and slugging confirmed that.
However, shooting it in with Speer 200 grain bullet, 50 grains of IMR 4350, in formed 30-06 cases, yielded some interesting results:
At 50 meter I got a very tight group, measuring 0.535-0.735-0.800 spread, as long as I keept the barrel cooled down between shoot. With warm barrel, the bullets landed all over the place, due to the worn barrel expanding its diameter ?
Also, after sighting the scope at 50 meter, the 100 meter shoot landed almost at the same point of impact as the shoots at 50 meter.
The average velocity with above loads was 2170 fps and 2190 fp, which was less the advertised velocity in the Speer Reloading Manual # 11, again indicating the worn barrel ?
I am going to keep the barrel, since this "No name Brand 98" is a fine shooter, as it is, and few years ago, I fine tuned the double stage trigger as well
