Buckshot Bowman
04-01-2014, 04:26 PM
Hello Lads,
I am very new to casting, as I am a black powder shooter and need big bullets. I have overcome a lot of the beginner problems, and am getting nice shiny bullet that are fully filled, and the weights are coming out right.
My questions, are most of my sprues on the bullets are a tad higher than the base, I also find different measurement around the base, some spots are .459 and others as low as .457.
I am using a RCBS bottom pour, I have a thermometer that reads 750 on a 1-20 tin lead mix I flux with marvelflux, my moulds are heated on a hot plate and are plenty hot and clean. I wait till the sprue frosts and count to four before cutting sprues.
How tight should the sprue plate be on mould, and how tight do you hold your handles, I have gone from a good hold to a death grip, These things aren't covered in the manuals and I am getting tired of throwing bullets back into the pot.
Thanks
I am very new to casting, as I am a black powder shooter and need big bullets. I have overcome a lot of the beginner problems, and am getting nice shiny bullet that are fully filled, and the weights are coming out right.
My questions, are most of my sprues on the bullets are a tad higher than the base, I also find different measurement around the base, some spots are .459 and others as low as .457.
I am using a RCBS bottom pour, I have a thermometer that reads 750 on a 1-20 tin lead mix I flux with marvelflux, my moulds are heated on a hot plate and are plenty hot and clean. I wait till the sprue frosts and count to four before cutting sprues.
How tight should the sprue plate be on mould, and how tight do you hold your handles, I have gone from a good hold to a death grip, These things aren't covered in the manuals and I am getting tired of throwing bullets back into the pot.
Thanks