ShaneG.
08-12-2010, 03:30 PM
I have a 12BVSS in .308 that I bought around 96-97. This thing shot great for a long time it now has close to 4,000 rounds through it.
It used to be easy to load for to get really nice groups,now it is nothing but a problem it seems. It started going south last year after putting a few hundred rounds through it. After beating the crap out of my shoulder the barrel was threaded and a brake was installed,I thought maybe this had caused the fliers.
The stock had cracked around one of the pillars so it was epoxied back in and bedded(twice) with no change still threw shots,changed scopes,bases and rings also still no change.
So I turned the threads off the muzzle after seeing the crown was pitted from leaking gas on the brake,used a new 11 degree crown reamer and redone the muzzle along with lapping to remove any sharp edge.
Before putting barrel back on I noticed some copper,so after about 10 rounds with a foam bore cleaner and a borescope had it clean,plus ran some Sweet's through it to make sure. Went out to shoot today and just barely got it to shoot under an inch@100,but at 200 looked like a shotgun hit the target.
After about 40-50 rounds the bore looked like a copper striped candy cane, you could see about 3 really bright copper stripes from the muzzle back as far as you could see down the bore. I never noticed this much before and never seen it on anything else I shoot.
I had tried bullets from 110,155,168,175 and used Varget,TAC,4064 and WC846 all with pretty much the same results some better than others but nothing great,this thing would stick 3-5 rounds in one nice tight group,and when I was doing my part one hole sometimes.
So does it sound like it has gave up the ghost? I'm tired of polishing this turd!
It used to be easy to load for to get really nice groups,now it is nothing but a problem it seems. It started going south last year after putting a few hundred rounds through it. After beating the crap out of my shoulder the barrel was threaded and a brake was installed,I thought maybe this had caused the fliers.
The stock had cracked around one of the pillars so it was epoxied back in and bedded(twice) with no change still threw shots,changed scopes,bases and rings also still no change.
So I turned the threads off the muzzle after seeing the crown was pitted from leaking gas on the brake,used a new 11 degree crown reamer and redone the muzzle along with lapping to remove any sharp edge.
Before putting barrel back on I noticed some copper,so after about 10 rounds with a foam bore cleaner and a borescope had it clean,plus ran some Sweet's through it to make sure. Went out to shoot today and just barely got it to shoot under an inch@100,but at 200 looked like a shotgun hit the target.
After about 40-50 rounds the bore looked like a copper striped candy cane, you could see about 3 really bright copper stripes from the muzzle back as far as you could see down the bore. I never noticed this much before and never seen it on anything else I shoot.
I had tried bullets from 110,155,168,175 and used Varget,TAC,4064 and WC846 all with pretty much the same results some better than others but nothing great,this thing would stick 3-5 rounds in one nice tight group,and when I was doing my part one hole sometimes.
So does it sound like it has gave up the ghost? I'm tired of polishing this turd!