Unbelievable isn't it, I knew a fellow in the 80's that had one and said the recoil was bad. He never mentioned the accuracy.Been happening since rifled barrels were introduced. See the book Sharpshooter. Covers sniping from DaVinci through Vietnam but with a heavy emphasis on the Civil War. Some pretty long shots made during that war. One 'hit' on a specific General took weeks to set up at over 1000 yds..
Those heavy slugs just do not give up much velocity!
