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I've seen leading in 40S&W with a similar configuration. What I found was that the walls of my barrel weren't perfectly perpendicular - on one gun, it opened up just a smidge (maybe .001) for about...

Yup, LLA. The batch I have been shooting I put a bit too much on (they are light brown instead of pewter), but not enough it is dripping or the like.

I currently load up the 175 grain Lee truncated cone (180 grains) over 4.5 grains of Hodgon Universal with okay results so far, but it is very smoky (could be too much lube). I also noticed a line of...

This page has a good (and more complete) write up.

http://home.earthlink.net/~potomac008/Lead%20Alloys.htm

Most shot includes much less antimony than that page suggests, using a small trace amount of arsenic (.5% or so, sometimes less) that interacts with the antimony to produce harder shot.

The...

In order for a microwave to heat, the energy that is being radiated by the magnetron needs to be absorbed. Microwaves (the dominant frequency radiated), are readily absorbed by water and water vapor...

Also, make sure you are aging your WW properly - air cooled take awhile to get up to peak hardness, and if you are shooting them right after dropping them (1-2 days) they might be way too soft.
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Depends on the powder speed you are using. Higher (peak) pressures means you need harder alloy. Air cooled WW should be plenty hard though. Most likely it is bullet size/fit though - have you tried...

Pure (very soft) lead is perfect for muzzle loading or casting certain types of shotgun slugs.

If you need something harder (for smokeless pistol or rifle you probably do), then you can trade or...

I cast 180 gr 40S&W in volume (two lee 6 bangers), and I run low pretty fast even with the 20 lb bottom pour. I tried ladle pouring out of a 10lb pot, and it was no fun at all.

As a side note,...

Propane is just not as volatile as acetylene, and there is no danger of detonating a propane tank like there is acetylene. I also don't know of too many people using pressurized oxygen with propane...

I have the same die, and the exact same issue (smallest I get is .405-.407). I size to .402 (my .401 lee push through pops them out that size), and have good accuracy and no leading if I use...

I've measured them with two different mitutoyo calipers - they are accuarate to half a ten-thousandth, and I zero them before so I think they are fine.

The front driving band is the biggest part,...

I've got a 6 cavity TL401-175-SWC - 40 S&W (401 Diameter) 175 Grain Tumble lube mold. I'm casting using approx hardball (#2) alloy. The boolits look good, but the sizes kinda worry me a bit.

The...

Ordered 200 lbs of WW lead. It all arrived in intact boxes (though some were a bit beat up), quickly and as agreed on. Straight shooter.

My 50 lbs of range lead arrived today - quick, and as promised. Lead looks excellent, proper amount, and the packaging is PERFECT. The box arrived in the best shape of any lead carrying box I've...

I would be up for 20-30 lbs at $3, depending on composition (at least 30$ tin).