I have used these for the last 4 years before I started reloading, during that time I have taken about 10 deer and havent lost any that I hit in the vital area. through the rib cage they go in one end and out the other, in the shoulder they have good pennitrationa and expansion, and will shatter the shoulder joint. As far as accuracy, if your gun likes em (all guns are differnt) they are as accurate as the shooter, I can get 1 MOA or better at 100 yards. They are a boat tail design so they are more accurate at longer ranges, however for hunting where your target is probably a 6" circle\ they are fine within 100 yards.