I have never seen a well hit deer go more than a 100 yds. Most go less than that. I will say that some well hit deer, particularly those with no exit or hit well but high don't always bleed so well and tracking can't take some effort, even its just 50-60 yds. I have helped track a few "well hit" deer, both mine and others, that went more than 100yds and we found after recovering the deer that the bullets point ofimpact had moved to a less desirable location. I suspect thats the case if someone trailed a deer two miles.

I prefer a bullet that will expand well but exit on most broadside or decent quartering shots. There are lots of bullets that meet my criteria as regards to deer. I think in the 30 cal, 7mm and 270 calmost cup and core bullets of reasonable weights do well. As caliber shrinks I think its wise to either use a heavy for calibercup and core or a premium bullet. Also I would add that bullet construction becomes more important as velocity rises. My rule of thumb is use a premium buletif impact velocities are likely to exceed 2700 fps.

The Nosler BT and the hornady SSTs have a reputation for opening quickly and doing a fair amount of damage. Often times this results in Bang flops and other spectacular kills. However the down side to this is that they may come apart and not exit and this coupled with poor shot placment(mostly the shot placement) can make a deer difficult to recover.

As an example in 308 I use 150 grainers with mostly good results (SST last few years and 150 Accubonds next year). If I were going to use a 243 I would choose a 100g ( which is heavy for caliber)Hornady interlock or speer hotcor or better yet a accubond/interbond/partition/tsx

Frankly except for cost there is little down side to using a premium bullet, its often not needed but them again maybe the time it will help is the next time you go hunting.