I have had a few of these yeas ago. Never had any problems.
I gave one to my pop back then and he has returned it to me. Its a 30-30 T/C barrel. I doubt he shot it very much. I removed the scope he had on it and replaced it with a spare VXII I had. While the scope was off I re mounted the base and cleaned and loc tited the screws. Installed new lower rings too. Known good scope properly mounted.
I cleaned the barrel. (Was not really dirty)
First trip to the range with light load of 3031 powder and a PCd 174g Lyman bullet with a GC and a half a box of factory 170g Remingtons. Nearly every bullet was a miss-fire!
Fixed all that with new springs and Federal Primers.
Range trip, last weekend was different. Not one miss fire, but Now I cannot hit the broad side of a darn... from the inside!!!
I shot the same 3031 load, a light load of Trail Boss and a 150g cast and a starting IMR4198 load of my 178 RD HP cast bullet. Out of nearly 60 rnds I had only about 12 bullet impacts on a 50 yard target. (Round holes)
I cleaned the barrel really well, just now and no leading was found. It was dirty, but imho, not enought to seemingly cause accuracy degradation.
Hoping to try again tomorrow with another trail boss load and a new 2400 loading. Using same bullets
Im looking for something 1700 ish velocity. With my lead bullets.
Any ideas? Ever had these kind of problems?
CW