Good luck on finding any ammo for that caliber, as I've looked all over the net for almost an hour since reading your post and can't find any. The 100-117 grain bullets would be your best bet for deer hunting, as the lighter bullets are really considered for varmints. If you want to use that rifle, you may be relegated to getting all the reloading equipment needed and buying 22-250 brass to resize up to the 250-3000 case size, as I can't even find brass for it.