I ran into a friend who shot a doe with spitzer type muzzleloader bullet. The deer ran hundreds of yards before dropping. And he recovered the bullet, which never mushroomed to deliver killing energy.

I advocate for semi-spitzers with rounded nose, round/flat nose or hollow point bullets for muzzleloaders that deliver sufficient energy to open/ mushroom the bullet. 

Do your homework and read up.

Avoid spitzer styles that are difficult to open and mushroom.

Most shots are taken at 40 to 60 yards and do not need sharply pointed bullets. 

You will be glad you changed bullets. I like a 300 grain semi-spitzer/hollow point for my 50 cal.  and at least 100 grains of pyrodex. 

Some examples of better mushrooming bullets.

Now is the time to shop!

I avoid sharp sleek pointed bullets that are not designed to readily expand. 

Good Shooting!