rockrat
02-05-2009, 10:32 PM
Finally took it out today for the first time. Went to the indoor range and proceeded to shoot some cast thru it. Got some leading with the commericial stuff I loaded.
Before it started leading, the thing seemed to shoot, except for a couple of chambers. I could shoot chamber 1 & 2 and just have a bit bigger hole in the target. #3 would be about an inch low. #4 back near the holes from the first two. #5 would be between #1,2 & 4 and #3. Last shot would be about 2" high. Got it home to clean and pulled out electronic caliper to make some measurements and one chamber mouth was .452 (#6) and #3 would be between .4505 and .451 (display went back and forth). All the others show .451.
Thinking the larger chamber mouth lowered pressure a bit and lower velocity, and #3 was just the opposite. Tighter cylinder mouth, higher pressure, more velocity and shot a little lower.
Is my thinking correct? Would it be a good idea to get a reamer and open them up to match the .452 cylinder mouth? Thanks
Before it started leading, the thing seemed to shoot, except for a couple of chambers. I could shoot chamber 1 & 2 and just have a bit bigger hole in the target. #3 would be about an inch low. #4 back near the holes from the first two. #5 would be between #1,2 & 4 and #3. Last shot would be about 2" high. Got it home to clean and pulled out electronic caliper to make some measurements and one chamber mouth was .452 (#6) and #3 would be between .4505 and .451 (display went back and forth). All the others show .451.
Thinking the larger chamber mouth lowered pressure a bit and lower velocity, and #3 was just the opposite. Tighter cylinder mouth, higher pressure, more velocity and shot a little lower.
Is my thinking correct? Would it be a good idea to get a reamer and open them up to match the .452 cylinder mouth? Thanks