I had a couple ideas last night on how I might be able to swag some bullets for my 450 bushmaster...cheaply. (still waiting for the barrel btw)
How did I do? I only used a Lee .452" bullet sizer, and a RCBS .243 win FL sizing die. This was made out of a 44mag case. I trimmed down the case and annealed it and run it up into the bullet sizer and out again using the shell holder. Then poured pure lead into the case...filling it. Once cooled, I trimmed off the rim. I lubed it and used the bullet sizer punch to drive it up into the 243 FL sizer...I slowly adjusted the die down about a 1/4 turn each stroke until I could see lead start to appear in the hole where the decapping pin is usually screwed into. I then used a standard punch and mallet to drive the bullet back out of the die. I had to trim off the excess lead that extruded from the tip along with a little brass. I then run it back through the bullet sizer.
It comes out to 258gr and is .762" in length. It should have a 20deg shoulder or ogive?...mimicking the 243 shoulder and giving it the "XTP" look.
I will continue to fine tune things and try to determine the best methods...but this seemed to work fairly well for a first attempt.