Kraschenbirn
08-19-2009, 11:22 PM
Just finished spending a couple hours deleading the bore of my '09 Argentine carbine. Was fireforming brass (from milsurp 06 cases) this afternoon and, by the time I'd fired the first 20 rounds, accuracy had gone from the usual 2"-2 1/2" groups @ 100 yds to "minute of 7-ring." Ran a couple of patches through the barrel and fired the remaining 20 rounds without any improvement.
Now, the Argie has been a shooter from Day One with this particular load (19.5 gr of 2400 under a Lee 155-312-2R run through a .314 sizer just to lube and seat the GC) and, all the way home, I'm trying to figure out what the problem might've been. As soon as I got back and sat down at the bench, I realized what I'd done.
I also shoot this same boolit, sized .309, in my K-31 and...yep, you guessed it...I'd pulled the wrong tray out of the storage cabinet and seated undersized boolits in those 40 fresh cases. My fault completely...tray had a post-it label stuck between the back rows of boolits...just had my head stuck where the sun don't shine.
Two hours of swabbing with Shooter's Choice Lead Remover, alternated with scubbing using a bronze bore brush, and a whole gob of patches get it clean and shiney again. Oh well, it was probably due, anyway...I'd put between 500-600 rounds through the gun in the last couple months without more than a quick scrub with Shooter's Choice and a couple of oiled patches after each range session.
Bill
Now, the Argie has been a shooter from Day One with this particular load (19.5 gr of 2400 under a Lee 155-312-2R run through a .314 sizer just to lube and seat the GC) and, all the way home, I'm trying to figure out what the problem might've been. As soon as I got back and sat down at the bench, I realized what I'd done.
I also shoot this same boolit, sized .309, in my K-31 and...yep, you guessed it...I'd pulled the wrong tray out of the storage cabinet and seated undersized boolits in those 40 fresh cases. My fault completely...tray had a post-it label stuck between the back rows of boolits...just had my head stuck where the sun don't shine.
Two hours of swabbing with Shooter's Choice Lead Remover, alternated with scubbing using a bronze bore brush, and a whole gob of patches get it clean and shiney again. Oh well, it was probably due, anyway...I'd put between 500-600 rounds through the gun in the last couple months without more than a quick scrub with Shooter's Choice and a couple of oiled patches after each range session.
Bill