Originally Posted by charlesasmith
Like your method of breaking in a barrel while testing for max loads based on pressure signs. I am going to try that on my .20 practical new barrel. My question is how many different powders/bullets will you use for testing after the break-in procedure is completed and do you just repeat the same procedure for each powder/bullet combination? I am considering 3 different powders and, maybe, 2 different bullets.
Since making that post back in Sept, I've done a couple of break-ins using Gun Juice. I found the Gun Juice when left wet in the bore, per instructions, greatly incresed my pressures. Since then, I have concluded that it's best to do the break-in prior to a GJ if you're going to do a GJ treatment. I think it's OK to do initial load devolpment in order to find max pressure loads, but I wouldn't look for accuracy results until after the break-in is complete. When doing your charge/pressure testing during break-in, make sure your bore is completly free of any cleaning residuees and dry, as it can affect pressure.