TheFlynn01 I like a flat point mostly because I hunt with my guns and it has a bit more impact on things. A hollow point is my second choice in cast bullets .
The very small dent that Lee calls a hollow base does not seem it would expand to me, as there is just to much metal around it . I bought the mold for the .459" diameter and was very happy it cast at .461" . I did powder coat some of those bullets and size them at .457" for my Marlin loaded over IMR-4198 at 1900 f/s they shoot under 2" at 100 yards . For that Marlin rifle I ended up going with the Lee 340 grain also powder coated I load them faster then I need here in Michigan but that is why I reload and the load is plenty safe in the gun.
P.S. I first noticed with my 50-3 1/4" sharps that a .509" bullet shoot fine with no leading in the .510" groove diameter barrel this is a 450 grain 50/70 bullet . My Marlin groove depth is .4575" and I had a very old .457" push though sizer on hand from a estate sale I used from the start with great results even at high speeds.