I read an article once that sometimes oal can cause this to happen, then it wasn't long and I had it happen to me so I said I was going to try what I read. I shortened the oal just a hair and it actually worked. Could have been a fluke but it has continued to have 1 group in this rifle.
That ain't gonna work if the barrel bedding is screwy, and I would bet it is.
So would I. I bought three Vanguards in wood a few years back when Slummy and Renegade were telling us about the Walmart clearances. All three in 243.
All three rifles had a severe speed bump pressuring the barrel near the front of the stock.
One, I resold before messing with correction of the stock, or even shooting it.
The other two, I shot each as manufactured. They were both erratic. I wrapped some sand paper around a socket and cut the speed bumps out. After adjustment, both rifles shot to MOA with Leupold VX II 3x9 s on clearance at the same time.
