I have pushed them 2200 fps in my Garands with no leading.

Fit. Fit, fit, fit.

Leading is the result of improper fit and too hard bullets 95% of the time in handgun rounds.

No issues at all with 200 grain bullets in 10mm at full power as long as they fit.  I cast them from isotope lead, both quenched (22 bhn) and air-cooled (11 bhn).  Only have issues when they don't fit.  Learned the hard way that you HAVE to slug the bore.  Both my Witnesses are about .001" oversized, and I had leading with the hard bullets or light loads.  Soft bullets and heavy loads were fine, I supposed becuase the base bumped up to seal the bore.  Slugged the barrels and starting sizing my bullets .402"+ and no more issues.

And I've gotten leading from pushing them about 1200.

My Precision Bullets 185 grain "black bullets" don't lead up no matter how fast I seem to push them.

What diameter lead bullets, what alloy, and what is the groove diameter of the gun in question?

Quote from: sqlbullet on March 25 2013 08:54:51 AM MDT
What diameter lead bullets, what alloy, and what is the groove diameter of the gun in question?

You talking to me? Or the original poster?

You....

I am a guy, which means I can't hear about a problem without trying to solve it

Well, it's a Precision Bullets 185 grain RNF. Looks like this.



It uses a proprietary coated, they ain't saying what, but I bet there's moly in the mix since it looks like a "black bullet". Look what happened when they took a propane torch to one. Lead melted out but the coating is pretty much intact.



I believe THAT'S why I am getting no leading with them.  Unfortunately, with a weight of 180 grains, I have to extrapulate a powder charge between a 180 to 200 grain bullet. Just see none for 185 in any of my manuals.

I've used their bullets, and that magic coating isn't "proprietary".  It's just plain ol' moly-d.  Nothing new.  Been around for over 50 years.  I've done my own in the past, and will likely take it up again soon.  The "melt" test is the reason I quit using it.  I recycle bullets (remelt, recast, reload, reshoot), and the "skins" were just a PITA in the pot.  No worse than copper, and since I'm doing that anyway, might as well mess with it.

I was actually curious about the 200 grain bullets you had leading with...And even more curious about the groove diameter and details about the gun that had the leading issues.

Quote from: DM1906 on March 25 2013 08:16:24 PM MDT
I've used their bullets, and that magic coating isn't "proprietary".  It's just plain ol' moly-d.  Nothing new.  Been around for over 50 years.  I've done my own in the past, and will likely take it up again soon.  The "melt" test is the reason I quit using it.  I recycle bullets (remelt, recast, reload, reshoot), and the "skins" were just a PITA in the pot.  No worse than copper, and since I'm doing that anyway, might as well mess with it.

Would regular moly keep intact like that? Not being smart azz, really don't know. I was just assuming a thin moly coating would not hold up to a propane torch that melted the lead inside.

Quote from: gandog56 on March 29 2013 05:12:10 PM MDT

Quote from: DM1906 on March 25 2013 08:16:24 PM MDT
I've used their bullets, and that magic coating isn't "proprietary".  It's just plain ol' moly-d.  Nothing new.  Been around for over 50 years.  I've done my own in the past, and will likely take it up again soon.  The "melt" test is the reason I quit using it.  I recycle bullets (remelt, recast, reload, reshoot), and the "skins" were just a PITA in the pot.  No worse than copper, and since I'm doing that anyway, might as well mess with it.

Would regular moly keep intact like that? Not being smart azz, really don't know. I was just assuming a thin moly coating would not hold up to a propane torch that melted the lead inside.

Well, considering that lead melts at around 500 degrees, and moly melts at over 4K, I'd say so.  A propane torch is capable of about 2K.  Thin is relative.

Quote from: sqlbullet on March 26 2013 08:34:28 AM MDT
I was actually curious about the 200 grain bullets you had leading with...And even more curious about the groove diameter and details about the gun that had the leading issues.

The gun was a Dan Wesson Razorback. I have never measured groove diameter on it as it loves those Precision Bullets 185 grainers, which is awful close to that 200 graisns. Also remember I used AA #9 powder, but do not remember the weight used.