roysha
07-05-2010, 04:08 PM
I'm not sure this is the correct forum for this question but I'll start here and I'm sure someone will make corrections as needed.
My question is this;
How do you determine a safe starting load for a cartridge, powder, bullet combination that doesn't seem to be posted or readily found? This is in reference to cast bullets, of course.
For example, I have a good supply of BL-C which I use in virtually all my rifles except my 270 and 22 Hornet. I want to use it to propel the Lee 155 grain cast bullet from my 7.62x39 chambered REM 799. I haven't found a listing for this situation.
I have assembled a couple of loads and test fired them from a functional point of view and all seems well but there was a degree of trepidation with the first couple shots fired.
Back in the days of my youth when I did a lot of wildcatting of various cartridges I developed a system I was comfortable with for calculating starting powder charges. However, this was with jacketed bullets and I not sure I fully understand the dynamics involved using cast bullets so am very hesitant to cross my method over until I understand things a little better, which is happening daily due to this terrific site and all the knowledgeable and helpful people here.
My question is this;
How do you determine a safe starting load for a cartridge, powder, bullet combination that doesn't seem to be posted or readily found? This is in reference to cast bullets, of course.
For example, I have a good supply of BL-C which I use in virtually all my rifles except my 270 and 22 Hornet. I want to use it to propel the Lee 155 grain cast bullet from my 7.62x39 chambered REM 799. I haven't found a listing for this situation.
I have assembled a couple of loads and test fired them from a functional point of view and all seems well but there was a degree of trepidation with the first couple shots fired.
Back in the days of my youth when I did a lot of wildcatting of various cartridges I developed a system I was comfortable with for calculating starting powder charges. However, this was with jacketed bullets and I not sure I fully understand the dynamics involved using cast bullets so am very hesitant to cross my method over until I understand things a little better, which is happening daily due to this terrific site and all the knowledgeable and helpful people here.