I'm not sure what has happened to Muzzy over the years but when they first released their heads, the replaceable trocar tip was ground to a very smooth finish. Today, the tips are very rough and jagged. It doesn't take much effort to turn a trocar tip or any of the other secondary tips into a cutting type of tip by simply honing it. In my tip comparison, I found it took less than half the effort to penetrate material once the tip as honed.
Here is the tip from a new Muzzy MX-3. You can see how rough it is.
Here is the tip from a 100 Grain Muzzy I bought last year. The only difference is that I honed the leading edges of this tip on a whetstone.