Reloading Coated Lead 9mm

[vdubber]

About to start loading these. I am using RCBS dies. Website says using a combo seating/crimping die can be tricky as it could remove the coating. I thought a little extra flare would do the trick. Too much flare here? Thanks in advance for any assistance.

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[Sheldon]

Looks good to me.

[vdubber]

Also got this ring upon testing a dummy round. Bullet did not seat. I have never used these dies so Im also the dummy at the moment.

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[vdubber]

Looks good to me.

Thanks. I'll try adjusting the crimp.

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[EMR]

[vdubber]

Awesome. Thank you!

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[pacrat]

If you’re going to be loading powder coated bullets regularly, you’ll want to invest in a Lyman M die. These actually expand the case neck and not just flare the case lip. A standard flare only opens the case lips and the bullet still swages down and often removes the coating (as well as shrinks the diameter of the bullet). Head over to the Castboolits forum for more info if you’re interested in learning a ton of tips.

^^^ some not quite correct- some wrong- some just advertising hype^^^

A standard expander die also "EXPANDS" the case neck to just under bullet dia. Just as the "M" does. And they don't just flare. The neck is expanded before the flare function even engages the case mouth. Which the "M" will also do if user chooses.

The "M" only comes into its own on progressive machines that have bullet feeders. The "STEP" in the expander plug makes it easier for the machine to start the bullet straighter in the case.

From Lymans Product Pimp page for the M die. https://www.lymanproducts.com/pistol...panding-m-dies

Improves accuracy of cast and jacketed bullet reloads. Doesn't stretch cases as does standard expander button. Extends case life. A "Must-Have" die for the cast bullet or flat-base bullet user.

^^^TYPICAL ADVERT "MUST-HAVE"HYPE^^^

The first step expands the inside of the case neck to just under bullet diameter for precise case neck tension in the finished reload.

^^^EXACTLY SAME AS STANDARD EXPANDER DIE^^^

The second step expands the case mouth to bullet diameter or slightly over. This allows the jacketed or cast bullet to be started perfectly centered in the case mouth and properly aligned with the axis of the case neck.

^^^AIDS WITH BULLET FEEDERS STARTING STRAIGHT^^^

Note: By adjusting the neck expanding plug slightly deeper, the second step also provides a slight flaring of the case mouth for reloaders using cast bullets.

^^^EXACTLY SAME AS STANDARD EXPANDER DIE^^^

OP .......... YOUR flare is just right. Setting up a SEAT/CRIMP die is all about getting the TIMING of seating the bullet to just before, correct depth, JUST AS the crimp engages.

If adjustment "timing" is off. Crimp finishes too early, while seating is still shoving the bullet down. Which will shave lead or coating.

DO THIS............
[1] ... Start with die body set too high for the crimp portion, to engage your flare.

[2] ..... Seat a bullet to desired OAL. Then back off the seating stem quite a bit.

[3] ..... Now start screwing down the die body. Little at a time. Until the flare JUST becomes straight. NO MORE....... LOCK IT.

[4] ..... Now, with the seated and crimped bullet all the way up inside the adjusted CRIMP die. Screw the seating stem down until it contacts the bullet in the die. LOCK IT. .............YOU'RE DONE.

[EMR]

Pacrat, you obviously reload. Do you load cast bullets that are powder coated as well?

[pacrat]

Pacrat, you obviously reload. Do you load cast bullets that are powder coated as well?

Yes

[EMR]

[vdubber]

I already tried with almost no flare. It shaved the coating off. When I get back to it I'll try that and see what the measurment is.

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[jeager]

Never put lead through hexagonal rifling. i.e. glock

[ysr_racer]

I've had trouble with dies that expand the case beyond the neck. There's not enough case tension left to hold the bullet.

I load on a Dillon 750 with a bullet feeder and a case feeder. I went back to a regular powder funnel that just flares the neck.

[vdubber]

I am currently using the Dillon 9mm powder funnel. I'm trying not to waste too many of these damaging them

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[pacrat]

You appear to be basing your opinions on some faulty premises.

First off, shoving a bullet into a case that is less than the bullet dia. Does NOT make the bullet smaller in dia. JUST THE OPPOSITE. It BULGES the case outwards. That's why so many inexperienced members ask why their newly reloaded pistol ammo has "bulges" when done.

A properly loaded round's OD, at case mouth, is always "bullet dia. + twice case thickness".
An inexperienced loader can incorrectly FORCE the OD smaller. By shoving it TOO FAR into a taper crimp die. Or worse case scenario. Shoving it back into a sizing die to make them look pretty. Both of which "extrudes" the bullet smaller than it should be, and loosens the neck tension. Both of which are detrimental to accuracy and causes excessive leading.

Second,.... Optimal cast, or coated bullets, are NOT .003" larger than "bore" dia. Which is typically only .350" on a 9mm. It is 001" over GROOVE dia. In order to seal the gases, and prevent leading.