Lube in front of gas check or not?

[MattC]

Veral,

On the 45 325 WFN mold I recently purchased, I am lubing the bullets on a star machine.  SHould I adjust it to lube the space between the gas check base or leave that for lead scrapings?  I am using your lbt blue lube.  

I have reamed my cylinder throats to 452.5 and my bullets size out to 452.1.

Bullets read 25 on the lbt tester, I have lapped with LBT bore lap until the constriction is no longer felt, which took over a 100 rounds (stainless ruger).  I tried clover 320 first but it didn't work.  

Anyway, after 30 to 50 rounds or so I am getting fairly heavy leading in front of the forcing cone.  I am only pushing them 1100 fps using 2400 powder.

[MattC]

One thing I forgot to do was to final polish with a tight bob and lap compound.  Guess I'll try that next.

[Veral]

Failure to polish is probably your problem, depending on where the leading is.   If the whold bore is leaded, it is roughness.  If only in the grooves, then groove diameter is larger than your bullets, and bullet diameter should be increased, as well as cylinder throats so they will pass through.

      If softer bullets fix the problem, small bullets are definately the problem, but softer bullets will not give you the accuracy I like to see customers get.  You need to get bullets up to groove diameter before they are fired.