Well I finally got a chance to hit the range for a while today. I had some .570 balls and .018" and .015" patches and I had some lubed with bore butter and some with lee resizing lube. I was using 777 ffg and CCI mag #11's.
I guess I'll start with the good. I didnt have one misfire or hangfire- no hesitation at all. I was a little worried about that at first since 777 tends to be a little hard to light.
The bad- Accuracy was horrible. There were times that I couldnt even get it on paper at 25 yards! I started with 70gr of 777 and pillow ticking with bore butter and had a 9" group at 25yds. Long story short, I eventually went to the thinner patches and worked from 50gr up to 85 and nothing. Then it dawned on me, "look at your patches dummy!" They were shreadded. Most of them had the center missing, and the rest were not even recognizeable as a patch. There was no difference between the bore butter and lee lube. I also noticed that once I had the ball about 6-8" down the bore it rammed much easier. I think I have a little of a choked bore. It shouldnt be that hard to start the prb's, so im thinking that they arefraying the patches at loading. I think that would also explain the centers missing out of the patches once they are fired. Both barrels had the same result.
Here is what I am thinking. I went out to find a few things earlier- picked up some .005" and .010" patches to try with the .570's, and I was looking for some .562 balls but to no avail. I want to try the .562's with a thicker patch because I think with a choked bore the thicker patch will help seal the bore better than a bigger ball with a thinner patch. Is my thinking on this correct, or have I completely missed something? Should I be thinning the bore butter sue to the cold? Also, does anyone know if anyone in anchorage has any .562" bound balls on hand?