Hollowpoint mold pin material?

[rkr]

I'm thinking of modifying my Lee 456-220-1R mold to a hollow point configuration. This is a used and badly treated mold I got with my .45 gun so not a big loss if things don't work out. My plan is to drill the mold for 7mm pins. Now the question, can I use brass as the pin material or should I go for steel? I see all commercial stuff uses steel so I'm wondering what's the reason for that?

[Mark Davis]

My guess, first toughness, second cost.
If you drop your hollow point pin and bend the tip or put a dent in it casting gets gets more difficult.