The taper crimp

[9mmepiphany]

I'm thinking they look a little heavy also.

If the mouth is rolling inward, it's too much. As far as my understanding goes, the mouth should be flat and perpendicular to the bore...so that it will headspace properly...the crimp should remove any flare, but not go too far

 

[savanahsdad]

yep to much, this is where having a few factory rounds on hand to check against would be a big help

 

[PhilMc]

Still a little too heavy

 

[vaalpens]

Everybody knows I am a novice at reloading and has loaded a total of 300 rounds. For me it seems using the Lee carbide factory crimp die makes it very easy, unless I just foolishly think my taper crimps are perfect. With my last batch of 9mm I just screwed in the die as per instructions, then the adjusting screw until it touches, then half a turn on the adjusting screw, and the result was .375" at the mouth. I was aiming for .376", but was happy the way it came out. It takes me much longer to find set up the seating die than setting up the Lee carbide factory crimp die.

 

[Walkalong]

I adjust my crimps by carefully screwing the die down a little at a time, about a 1/16 turn, and then eyeball the results under magnification.

For a taper crimp in a separate step, I will also crimp a few with nothing else going on. One should barely feel anything at all. No way one can feel the crimp while seating.

 

[GBExpat]

I am a Single Stager.

For me, seating & crimping are performed as two separate operations (I even got a cheap $28 Lee press for sometimes use for the seating step with certain calibers/loads).

I have never liked the idea of them being combined.

 

[lauderdale]

I don't like to adjust to much on the SDB as it has pressure plates to keep adjustments intact. So I use my turret for seating and rarely for crimping. but it all depends. If something goes wrong I have an extra set of dies and I like to compare. (and learn.) In time I will prob. upgrade to a dillion + model? The dies will take me some time I bet to have all tuned in, looks like it espc. when case size differ's. W/taper c. .

 

[Toprudder]

O ya, after the crumpled cases I knew I was over crimping. It was a Hornady set, seat and crimp in one motion. I had .356 128 gr lrn loaded in the 9mm.

One reason I like seperate seat and crimp dies. But, yeah, probably too much crimp.

 

[Walkalong]

There is no reason one has to taper crimp an auto caliber in a second step. They certainly can if that is how they want to. It is a bit easier to set up, although I could hardly describe it as hard to do.

http://www.thehighroad.org/showpost.php?p=7699828&postcount=14