I've owned a few Savage 24s, some so old that they didn't come with serial numbers, in both rimfire and centerfire, .410 and 20 gauge, configurations.
The rimfires have generally shot better groups than the centerfires, even more so when the barrels get a little warm. I have, or had, a 24V in 222/20 that would consistently put the first shot from a cold rifle barrel dead center in the bullseye, but would sent all subsequent about 6" away, always in random directions, so you couldn't anticipate the change and aim accordingly.
I have a 24 in 22M/410 that I really like to carry while woods loafing. It even shoots OK with .22 LR ammo if I use one of MCACE's chamber inserts. A .410 with Brenneke slugs is probably adequate for animals up to 80 lbs. and more accurate in anything that I've shot them in than any with Foster style slugs. I weigh a lot more than 80 lbs. and wouldn't want to get shot with a Brenneke slug from a .410.
Combination guns walk as they get warm. It's just a fact.
