a few years back now I bought a Winchester M70 Featherweight chambered to the 7x57 from a guy at a gun show I'd dealt with in the past. He said the rifle was accurate and he's never lied to me before. Well, yes it was accurate for the first three shots. By the time I'd shot a box of the wimpy factory ammo to get the brass, groups were barely staying on the paper. The bore was badly fouled and if I was lucky it only took 8 to 10 hours to clean the bore. I gambled on doing a firelapping on the barrel and when test the barrel still fouled but about the same as most of my other rifles. I've thought about doing another firelap but hesitate as I don't want to mess up the throat.

As far as that old guy in that video, I agree with Mule Deer. He's about as FOS as a Christmas goose.
PJ

Our forefathers did not politely protest the British.They did not vote them out of office, nor did they impeach the king,march on the capitol or ask permission for their rights. ----------------They just shot them.
MOLON LABE