If you are looking for an inexpensive modification to your existing seating die, one might give the following a try before buying a new die set.
To eliminate the bullet tip bottoming out in the seating plug, a pressure ring on the ogive and perhaps some concentricity problems one can modify a replacement seating stem for a few bucks. The modified stem will be an exact match for the particular bullet used. Here's how I did it to a 7mm RM Hornady die I use.
Purchase a replacement seat stem and some epoxy. I used a JB Weld that mixes to a very thick consistancy. Thicker is better than thinner. You'll see why in a moment. You will also need a mold release agent. I had a can of a silicone based agent from another project using fiberglass. Select a bullet with a good point on it; not dinged up or otherwise damaged. Coat the bullet liberally with mold release and seat it in a dummy case. More release agent on the "cartridge." Next disassemble the die and coat the die, inside and out, with release agent. don't be shy with the release agent. This will make any cleanup much easier later. Next, mix enough epoxy to fill the NEW seat stem and fill the stem. Use a tooth pick to force the epoxy to the bottom and to get the inevitable air bubble out. Now before the epoxy sets up and you need to move quickly here otherwise a thin epoxy will run out; re-assemble the die with the epoxy filled stem and screw the die to the press. Run the dummy cartridge up into the die to the point where the bullet just starts to seat a little deeper AND STOP! FREEZE! Don't move the ram. I put a work glove on the ram handle to weight it so it wouldn't move. Let the epoxy setup undisturbed. i.e. come back the next day. Once the epoxy is cured, remove and disassemble the die. Clean up any runs or drips and clean the release agent off everything.
You now have a seating stem that will exactly match the bullet you are using. If you change to a different bullet later, simply repeat the process with the new bullet. Don't forget to label each stem! I got lucky with my 7mm Rem Mag die when I did this for Berger 168 VLD's. The loaded bullets are always concentric to less than .0005". So far, if the runout is greater, the case has been the culprit.
I still bought a Redding S neck die and Comp Seater So I could use those features but when I load Berger 168 VLD's, it's the modified Hornady die I use. someday I'll do the same to the Redding die.
If you do try this, make a few dry runs first so one is able to move quickly without having to 'backup.' And use plenty of release agent. So You know I'm not perfect, I screwed up a reasonably good .223 die by not putting enough release agent on it. Now I cannot get the last remnants of misplaced epoxy off and of course, it doesn't work so good now.
Does anyone know how to remove epoxy without using heat?