Hi, Leo:
Your stringing may be caused by a too tight forend. If you can't slide the forend wood back & forth a bit, try shooting it with the forend cap loose. If your stringing goes away, file off a bit of wood where it fits into the action or the forend cap, which ever is tightest. The wood might be too tight around the barrel too, and you might have to relieve the barrel channel.
Brian Pearce did a primer test in Handloader #207, Oct. 2000, and got best uniformity from CCI 500 primers. CCI 550 Magnums weren't as good. Exterme spread was 35 fps. vs. 62 fps with 2400 and a 158 gr. Speer JHP. Of course, he might have had a good batch. Don't try Winchester Small Pistol Magnum primers without carefully working up again. Things can get spooky fast with them and I don't use them with 2400 anymore.
Bye
Jack
Your stringing may be caused by a too tight forend. If you can't slide the forend wood back & forth a bit, try shooting it with the forend cap loose. If your stringing goes away, file off a bit of wood where it fits into the action or the forend cap, which ever is tightest. The wood might be too tight around the barrel too, and you might have to relieve the barrel channel.
Brian Pearce did a primer test in Handloader #207, Oct. 2000, and got best uniformity from CCI 500 primers. CCI 550 Magnums weren't as good. Exterme spread was 35 fps. vs. 62 fps with 2400 and a 158 gr. Speer JHP. Of course, he might have had a good batch. Don't try Winchester Small Pistol Magnum primers without carefully working up again. Things can get spooky fast with them and I don't use them with 2400 anymore.
Bye
Jack
