Post by waterboy on Apr 14, 2011 23:38:13 GMT -5
I've checked three of my revolvers very carefully with precision pin guages and they check out perfectly! No tight spots in the throats or anywhere.
But...
I cheaped out and bought a closeout barrel from Midway, a Adams & Bennett (?). Fluted stainless in .24 cal. Mated to a VZ-24 sporter I slung together. Several told me the barrel was known to be on the rough side but it was cheap. At first it was a .243 Win. Which I was not happy with, then re-chambered to .244 Ackley. From reasonably clean it would do 1.5 or so then open to 2.5-3.25” and hover there. Down the bore it looked nasty after only a few shots. Running a bore snake would start it all over again. I was very systematic in the rate of fire, checked the bedding, ammo etc. It was bore roughness I figured.
Bought a $20 Wheeler bore lapping kit. It amazes me the guys with a fine rifle that shoots .25 MOA and fire lap then wonder why their rifle shows little improvement. My rifle, however, seemed a perfect test mule.
I shot 8-rounds with the 220 grit, cleaned, then 8-rounds of the 320, cleaned, finished with 10-rounds of 600 grit. Took me about a week but I almost followed actually the directions. I had four rounds (several year old starter loads, not accuracy developed) from the first target/set of groups.
I was not having my best shooting day and a bit breezy but managed a good three then flinched on that 6-o’clock. I have not followed up but it does look promising. After firing the bore is still clean looking. There may be something to this fire lapping. I’m pleased.
Now I'm certainly not telling anyone to go out and try this. I just thought it might be interesting to talk about.
SB
But...
I cheaped out and bought a closeout barrel from Midway, a Adams & Bennett (?). Fluted stainless in .24 cal. Mated to a VZ-24 sporter I slung together. Several told me the barrel was known to be on the rough side but it was cheap. At first it was a .243 Win. Which I was not happy with, then re-chambered to .244 Ackley. From reasonably clean it would do 1.5 or so then open to 2.5-3.25” and hover there. Down the bore it looked nasty after only a few shots. Running a bore snake would start it all over again. I was very systematic in the rate of fire, checked the bedding, ammo etc. It was bore roughness I figured.
Bought a $20 Wheeler bore lapping kit. It amazes me the guys with a fine rifle that shoots .25 MOA and fire lap then wonder why their rifle shows little improvement. My rifle, however, seemed a perfect test mule.
I shot 8-rounds with the 220 grit, cleaned, then 8-rounds of the 320, cleaned, finished with 10-rounds of 600 grit. Took me about a week but I almost followed actually the directions. I had four rounds (several year old starter loads, not accuracy developed) from the first target/set of groups.
I was not having my best shooting day and a bit breezy but managed a good three then flinched on that 6-o’clock. I have not followed up but it does look promising. After firing the bore is still clean looking. There may be something to this fire lapping. I’m pleased.
Now I'm certainly not telling anyone to go out and try this. I just thought it might be interesting to talk about.
SB