DrMike
Ballistician
- Nov 8, 2006
- 37,300
- 5,939
For all the rifles I test, the rifle rests with the front action screw on the bags. Further forward, and there is often enough pressure on the barrel to change harmonics significantly.
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Guy Miner":2uvmqljy said:"Well, I just scrubbed the crap outta my barrel. I can't believe how much crud came outta there!"
Don't be surprised if it takes a few shots for the rifle to "settle down" and group well again after a major cleaning like that. May or may not happen. I sure can't predict which rifles will so behave.
SJB358":2x4kt4x7 said:Good luck. What are you using for copper removal?
ScreaminEagle":kovkfnpq said:SJB358":kovkfnpq said:Good luck. What are you using for copper removal?
Kroil and JB bore paste applied with VFG super intensive cleaning pellets
SJB358":kbtq2be1 said:ScreaminEagle":kbtq2be1 said:SJB358":kbtq2be1 said:Good luck. What are you using for copper removal?
Kroil and JB bore paste applied with VFG super intensive cleaning pellets
Yep, that sounds like the medicine needed. What kinda gunk came out?
ScreaminEagle":3iyg8f0y said:Really black stuff. Kinda like oil sludge. I made about fifty passes through the tube with the bore paste and kroil. Then I cleaned it all out with kroil. Kroil is red in color, so I just went until I had a nice red patch without any black on it.
FOTIS":2cij42ai said:When are you shooting it?
Hey Doc do you ever sleep
ScreaminEagle":2huhatze said:Ok guys, I scrubbed my barrel out real good with the kroil and JB paste. I check the OAL with my hornady gauge, and loaded up some 100gr BT's to the lands. I used H414 as it has always given the best performance in my rifle. I loaded in .5 gr increments from starting to 2gr over max, and shot a ladded test at 300yds. 45gr and 45.5gr showed less than an inch of vertical, so I have loaded up twenty rounds using 45.3gr of H414. I will shoot these through the chrono to check the SD and accuracy as well. I'll let you guys know what's going on.