How old is you HP?
I bought mine back in 1980, and its feed ramp is a little steep, so other than full ball 115gr ammo, it doesn't feed very well. I suppose I should have had a smith take a look and mod the ramp long ago.
Now my Browning BDM on the other hand, has a voracious appetite and eats just about anything I've tried.
I got it in the early 1990s ... it's the blued version with the adjustable "target" sights.
It faithfully has eaten every brass or nickel plated cartridge I have ever attempted to feed it, ranging from Chicom ball to various hollowpoints. It even does OK with Blazer (aluminum case). It just does not like those Wolf cases ... they stick in the magazine.