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I use a brush soaked with solvent.

Try casting only one cavity and see if you still have that variance.

So you ran a dirty case into your sizer die? Don't do that. Clean your die. Clean your brass. Reload clean brass.

Please describe your entire reloading operation to us. I think you will benefit...

Make a series of dummy rounds, starting with an unsized bullet, then .359", then .358". Use the largest size that chambers at the OAL you wanna use.

That's why you don't measure a round hole with a dial caliper. You use a plug gauge. Obviously you can't measure the groove diameter this way. You have to slug. And if you have an odd number of...

In a loaded round, at least some of the bullet shank is already in the throat while the slide is in battery, so there is no shaving going on.

I'm thinking .367" because .368" won't chamber freely....

http://www.taurusarmed.net/forums/bullet-casting-cast-bullets/57576-rd-make-mak-bullet-mold-2.html

Go to post #18

Look at the chamber schematic.

It shows a CIP spec chamber has a tapering...

Instead of measuring the bore and groove diameter, consider this: you should be sizing to fit the throat. The throat is always the same or larger than the groove diameter. The throat is alot easier...

.40 dies are designed for .399"-.400" jacketed bullets. Introducing .401"+ into the mix will cause internal issues. If the OP flared more, the seater die will simply unflair it while seating. If the...

I run 125gr .38/.357 TCFP sized to .359" @ 1.040" OAL in my KKM 9mm barrel. I've shot everything from 22 down to 11 BHN without any leading, although the softer bullets required a different load to...

I just bought this mold now on eBay. I hope it is as good as yours. My Sig .40 S&W has a .4045" throat. So I won't be sizing, I suppose. I figure 4grs of Bullseye should be a good start. What do you...

I recently tested this: I seated .358" BHN 12 bullets into a WCC 9mm case that was flared only by the use of a universal flare only die (doesn't have a plug that goes inside the case to expand the...

It could be you measured your cylinder throats incorrectly. Did you use your caliper jaws? That's not the way to do it.

A softer bullet will fill out the bore better than a hard bullet, so even if...

+1

You can taper crimp or roll crimp over the ogjive and have a perfectly usable round albeit with a little bit less case capacity cuz you'll be seating it deeper. I do that when loading 45 ACP...

Any resolution to this issue?

Alliant now lists 5grs of PP under a 147 JHP seated to 1.130" OAL.

4.5 grains with an OAL this short is prolly max, and the breech face marking the case head is a...

tommygirl,

You are making a big deal out of nothing, dredging up ancient history, assasinating my character because you don't have an argument.

You are trolling.

Also, try seating deeper in the case and crimp over the shoulder of the front driving band. This will raise pressures and improve combustion.

You can also adjust crimp. You'll get better combustion that way. But don't overdo it, because you'll buckle the case walls away from the bullet and actually lose case tension.

No it wouldn't.

Scales are not that consistent as to be within .1 grains of eachother. Published data takes that into account.

Bullseye is not an evil volatile nuclear explosive, even with max...

I think the difference in diameters you are seeing is due to your inconsistent closing of the mold halves. I notice the same thing with my bullets. Some are harder to size than others. No biggie.
...

I'd try a soft alloy and at a higher temperature with a super hot mold. TC barrels and chambers are unforgiving. Does your chamber have a "forcing cone" looking throat? Good luck trying to match the...

Since you are running mid-pressure loads, it don't matter. Just know that people push the 9 past 50,000 PSI in competition without blowing themselves up. That's a long way to go from where you are,...

Would that be in the case of pushing too soft of an alloy at too high of a pressure thereby causing the alloy to fail?

I can see someone running a soft 115gr bullet at 1400 FPS out of their 9, but...

I think the dull layer of metal you are seeing in the melt is the tin separating from the melt. Use some saw dust to flux it back into the melt. Your melt will look like a mirror. I also think the...

Your post is off topic. I have not thrown a temper tantrum, or uttered profanity, or anything of the sort. You have mischaracterized my responses in this thread. I suggest you stick to lead and gas,...