thanks for the article, Mr. Miller covered some territory w/it. He seems to question the expansion capability of the Speer 150 gr SP Spitzer even though the velocity at 100 yds is 1900 fps + - this bullet is one I've had good results on paper with in my .310 bore M30 useing 322 powder. the pistol slugs did well, little difference in the Hornady 130 & Sierra 135 gr. this is as Steve has determined as likely also. I still feel that the Hornady A Max 155gr slug has the potential to be a good slug for the M30 due to the thin jacket and polymer tip. few months back I got some on clearance from somewhere (Midway?) and need to load some to try. One of the soft-point cartridges from Russia (?) is a 154 gr so I'm thinking this could be a good slug over a stiff charge of 322 or other fast powder. I use the 680 for lighter slugs as the Hornady .310 VMax which likely would do well with good placement IF the shot was there.
I took 2 does to fill one of my 2 doe tags each season useing the Win. 123gr .310, both one-shot dead, one a pass-through base of neck shot that took out the bone the other a full-frontal straight down the gullet that didn't hit bone until the core (jacket seperated) hit the pelvic bone. this doe made 3 leaps and dropped. I don't consider the Win round the best choice on account of this, but dead is dead.
a 150gr loading I feel would be better for a potential tough shot on a big boy such as quartering-away when no shot other than a through the back rib area to the vitals presents.