i received a reply. as you say, they should stabilize fine. the length of these bullets is 1.07".
120 grains of blackhorn? ha. i was thinking something in the 80-90 gr goex ffg would be sufficient? maybe 80 gr bh209? we don't have polar bears in pa.
i arrowed my buck this year the monday after the archery bear season ended. the shot was good but the blood trail was not. i lost the trail, i expect, when he pulled a 90 and made a last ditch flat out run after loosing enough bp. i did check for this scenario but ultimately was about thirty yards shy of recovering him that night. i spent most of my time trying to pickup the trail on his last heading. so i started to get nervous and backed out. i live ~70 miles away and this spot is ~1.5 mile back. backing out was a risk. coyotes and bear abound. upon my return, a bear had left its calling card. i've been archery hunting ~20 years. i'm was surprised i didn't see him fall. i was in a climber at 25 yds. the buck was broadside. i wish i could have gotten a look at the exit hole. the entry was a bit higher than i'd like but with the angle the exit should have been good.
i had the big bear in front of me three times during the archery season- @ 40, 50, and 80 yds. i had him @ 80 yards in the last half hour of the first day of rifle/extended bear season. i was on the ground, and the frozen ground along with a well placed stand of saplings saved him again. he looked like an elephant strolling through the woods. between the pressure and a winter storm i'm fairly certain he denned up and i didn't see him again. on the second to last day of the extended season i took my 2nd bear. i feel a bit bad about it as he was a 70 lb 1st year cub. in my defense, he was by himself, and i had seconds to make a decision. i've only just begun to figure them out, and they're one of the few animals that can still get me worked up.