BCRider
Member
Greetings from the Great White North. Well.. more like the Great Wet North. In my area we've only had a couple of inches of snow so far this winter. Lots of rain though.
Some time back I posted my tale of woe with my Ruger Super Blackhawk that had three small chamber throats and three normal throats.
Well I got that fixed a while back and loaded up some reduced power lead bullet loads to check for accuracy. Rested shooting still didn't show the sort of accuracy that so many here write about. Like 4 inches or so at 20 yards at my club's indoor range.
So just tonight I slugged the bore to check things out. A .490 round ball was hammed down the muzzle with a block of 2x4 and an aluminium cleaning rod used to bump it the rest of the way down the bore. The slug was pretty consistently a snug push fit the entire trip down the barrel until it got to the area where it's threaded into the frame. THEN it got quite tight and needed a few good palm thumps to get it by.
Re-engaging the slug in the muzzle and pushing it in still showed a lot of drag to passing down the majority of the bore. Not quite as much as the first time, but close. Again I needed a couple of good palm thumps to get the slug to pass through the area bounded by the threading in the frame.
So it would appear that the bore is a little snug as it passes through the frame. Could this be the reason why I'm not seeing the sort of accuracy that I am able to get with my other revolvers? And the sort of accuracy that so many here are getting?
The fact that the slug was stil snug going down the bore the second and third time suggests that the part at the threading isn't much smaller. I'm thinking that I may set up a threaded rod and make up a few slugs like this that are drilled down the center and use them as lapping tools to open up the area bounded by the frame and perhaps a little ways up the bore so the overall bore is SLIGHTLY tapered to a smaller size as it reaches the muzzle.
Thoughts on this idea?
Some time back I posted my tale of woe with my Ruger Super Blackhawk that had three small chamber throats and three normal throats.
Well I got that fixed a while back and loaded up some reduced power lead bullet loads to check for accuracy. Rested shooting still didn't show the sort of accuracy that so many here write about. Like 4 inches or so at 20 yards at my club's indoor range.
So just tonight I slugged the bore to check things out. A .490 round ball was hammed down the muzzle with a block of 2x4 and an aluminium cleaning rod used to bump it the rest of the way down the bore. The slug was pretty consistently a snug push fit the entire trip down the barrel until it got to the area where it's threaded into the frame. THEN it got quite tight and needed a few good palm thumps to get it by.
Re-engaging the slug in the muzzle and pushing it in still showed a lot of drag to passing down the majority of the bore. Not quite as much as the first time, but close. Again I needed a couple of good palm thumps to get the slug to pass through the area bounded by the threading in the frame.
So it would appear that the bore is a little snug as it passes through the frame. Could this be the reason why I'm not seeing the sort of accuracy that I am able to get with my other revolvers? And the sort of accuracy that so many here are getting?
The fact that the slug was stil snug going down the bore the second and third time suggests that the part at the threading isn't much smaller. I'm thinking that I may set up a threaded rod and make up a few slugs like this that are drilled down the center and use them as lapping tools to open up the area bounded by the frame and perhaps a little ways up the bore so the overall bore is SLIGHTLY tapered to a smaller size as it reaches the muzzle.
Thoughts on this idea?