Adding pewter to range lead?

[HP9MM]

My cast bullets from indoor range lead end up with a BHN of 12 to 14. If I add pewter to the lead in the pot what will I gain? Will it make the bullets harder? I have read that it makes them fill out better but they seem to be fine in that manner. What percentage by weight would I add?

Thanks!

[wyofool]

Tin to make it flow better. Antimony to make it harder. The percentages depend on how hard you want it.

[rancher1913]

if your getting good fill out, don't waste the tin.

[lightman]

Range lead at 10-14 should cast great. I would try it before using the tin. Tin will make it a little harder but not much. As stated, tin makes it flow and fill out better.

[Grantb]

I caste with range lead, if there is any problem with fill-out I add a small piece of pewter. Usually just a small bit of pewter does the job. I don't bother weighing the pewter.

[WRideout]

I caste with range lead, if there is any problem with fill-out I add a small piece of pewter. Usually just a small bit of pewter does the job. I don't bother weighing the pewter.
I regularly mix range scrap with some (unknown) small quantity of pewter. It makes the wadcutters fill out better,and they are shiny and pretty. I don't guess I really need it.
Wayne

[Grmps]

Tin to make it flow better. Antimony to make it harder. The percentages depend on how hard you want it.

+1 for wyofool if I want it harder I mix in a little Monotype