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Paul B. · June 22, 2007, 01:23 PM

I have to agree. neither bullet that you have is suitable for a 9MM. Depending on what the #358477 weighs in your alloy, it might work.
However, the first thing I would do is slug the bore of that gun. I have three handguns in 9MM and two slug out at .358".

The other may be .357" but it has an odd number of grooves that make it difficult to determine the groove diameter for sure. I use the Lyman #356402 mold. Mine casts bullet right at .359" and I lube and size them at .359". Accuracy improved greatly using bullets of that sizing.
If you barrel is .356", try sizes of .357" or even .358" if the chamber will allow this. If it's .357", go with .358" or .359", again, if the chamber will allow it. Accuracy will improve and leading will either be non-existant or so slight as to not be worth bothering with. At least, it has worked that way for me.
Paul B.

June 22, 2007, 01:23 PM	#3
Paul B. Senior Member Join Date: March 28, 1999 Location: Tucson, AZ Posts: 3,800	I have to agree. neither bullet that you have is suitable for a 9MM. Depending on what the #358477 weighs in your alloy, it might work. However, the first thing I would do is slug the bore of that gun. I have three handguns in 9MM and two slug out at .358". The other may be .357" but it has an odd number of grooves that make it difficult to determine the groove diameter for sure. I use the Lyman #356402 mold. Mine casts bullet right at .359" and I lube and size them at .359". Accuracy improved greatly using bullets of that sizing. If you barrel is .356", try sizes of .357" or even .358" if the chamber will allow this. If it's .357", go with .358" or .359", again, if the chamber will allow it. Accuracy will improve and leading will either be non-existant or so slight as to not be worth bothering with. At least, it has worked that way for me. Paul B. __________________ COMPROMISE IS NOT AN OPTION!