I've owned a few rifles chambered for 40-degree shoulder improved cartridges and don't recall that any of them fed as smoothly as the original case prior to being improved.
The worst feeding improved cartrisge that I had was a 250AI in a Ruger 77 RSI. It fed so poorly that I got a new 77 RSI 250 Savage barrel from Rody's and rechambered it to 25 Souper. Same performance, better/smoother feeding.
I have a 338-06 built on a Husqvarna action that was intended for shooting elk and moose size animals, big enough that I want to be able to take quick follow up shots for as long as the animal is still standing and the shot(s) aren't obstructed.
