Have a 1970's vintage M1A that was accurized for me at the AMTU at Ft. Benning. It shoots little bitty holes and I've culled hundreds of deer (legally) with it...she's a nasty rifle with deer!
Interesting note: I bought it from a local Sheriff's department after it was used in a murder/suicide. Afterwards, I had it worked on. It had a Winchester barrel on it from the factory initially.
