triggerhappy243
09-14-2014, 09:21 PM
I have to start my thread over because some of the input I have recieved was not fully understood. TOOLS, Type of mould, Type of lead and content of ad/mix alloys. Posted are a few of my measuring instruments. one is my Dial caliper. which does measure I.D. also is one of my mics.
I did some comparative reading on this site as well as one other site with regard to cylinder bore dimensions as well as barrel bore dimensions of my revolver. I now know what these are supposed to be........... and they are not what they are supposed to be.
So the current alloy I am using to cast is Straight COWW. Someone here stated that COWW tin and antimony content is not consistent. the mould is a lyman 429421. 4 cavity. I do know the mould casts too small and I know that each of the cavities are not cut exactly the same as the others. I tried lapping to enlarge and it only opened up the base driving band. this is not helping me.
So I know I need to somehow increase the cast bullet diameter by .002 (2 thousandths of an inch) in order for the bullets to get sized and lubed in the sizer die I currently have.(.431) Looking into another mould. I dont believe lyman can or will fix this mould so each cavity is identical and large enough in diameter.... Nor do I think Lyman will cut a new mould just for me the diameter I need.
I have thought of taking all my bullets cast so far, along with the ingots I used and remelting in a larger pot, add some more ingots to have a larger batch to combine, and have some samples made to analyze what the tin and antimony content is. Then add whatever quantity of tin and or antimony to make it right. I will add more Q and A as I get feedback that will help me to the next step.
I did some comparative reading on this site as well as one other site with regard to cylinder bore dimensions as well as barrel bore dimensions of my revolver. I now know what these are supposed to be........... and they are not what they are supposed to be.
So the current alloy I am using to cast is Straight COWW. Someone here stated that COWW tin and antimony content is not consistent. the mould is a lyman 429421. 4 cavity. I do know the mould casts too small and I know that each of the cavities are not cut exactly the same as the others. I tried lapping to enlarge and it only opened up the base driving band. this is not helping me.
So I know I need to somehow increase the cast bullet diameter by .002 (2 thousandths of an inch) in order for the bullets to get sized and lubed in the sizer die I currently have.(.431) Looking into another mould. I dont believe lyman can or will fix this mould so each cavity is identical and large enough in diameter.... Nor do I think Lyman will cut a new mould just for me the diameter I need.
I have thought of taking all my bullets cast so far, along with the ingots I used and remelting in a larger pot, add some more ingots to have a larger batch to combine, and have some samples made to analyze what the tin and antimony content is. Then add whatever quantity of tin and or antimony to make it right. I will add more Q and A as I get feedback that will help me to the next step.