I'd never shot a 336 until a buddy wanted me to zero his rifles, the other rifle was a Remington 742 .30/06. The Marlin shot factory CoreLokts into an 1.2", the Remington was lucky to hit 4 inches. I took his rifles back to him and told him to put the 742 back in the closet and use the Marlin.
About three years ago, I bought a 1960 vintage 336SC and it will likewise shoot just over an inch with factory PowerPoints. I can live with that, I've hunted with worse, for years. Deer cannot live with it, either. I'm not a rabid fan, but I do like the one I have. I'd rather it had been a Texan, but it's a nice little carbine, regardless.
