I haven't shot much of the American Eagle ammo so I can't comment on it's potential. If you're going after deer with factory loaded 357 magnum's though, then you're making a good choice using the 158g SP's. If you're looking for reasonably priced ammo, I'd suggest the Mag-Tech if you can find it. Around here it sells for less than Remington, Winchester, and such, and shoots real good in most guns from what I've seen. It also gives very good terminal performance on deer.