expanding/seating problem

[BLUEDOT37]

Did you ever measure the diameter of the seating die? It would be interesting to see if your seating die is undersized.

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This would seem the likely answer. The seating die may not have adequate camfer on it's mouth to funnel the flared case into it.

I never tried calling Lyman but when I had an issue with a new .40 S&W taper crimp die I emailed them. They responded back & sent me a new die... with the same problem. Oh well.

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[rwsmith]

Can you use....

Can you use the roll crimp die to get a taper crimp by setting the die high and just let it take the bell off the mouth without actually 'crimping'?

 

[rwsmith]

I'd like to think....

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This would seem the likely answer. The seating die may not have adequate camfer on it's mouth to funnel the flared case into it.

I never tried calling Lyman but when I had an issue with a new .40 S&W taper crimp die I emailed them. They responded back & sent me a new die... with the same problem. Oh well.

.

I'd like to think that I could contrive something to machine/file/sand the opening enough to let the case mouth enter the die. Or, if you know anybody with a lathe, have them chuck it up and take off some material. I've noticed that when I overflare, I have trouble getting the mouth into the die. If I do it right though, it slides in no problem, but it seems like it would be easy to manufacture the die such that it has a built in internal taper to take of that.

 

[smokindog]

I started reloading just as this most recent drought of supplies began a few years ago. When I purchased my LNL and my 9 and 40 dies, all that were available were roll crimp (if you recall, even hardware was difficult to find). I contacted Hornady and they told me precisely what you suggest, back off the crimp and it will remove the flare and give you the taper you need. Works like a champ.

Can you use the roll crimp die to get a taper crimp by setting the die high and just let it take the bell off the mouth without actually 'crimping'?

 

[Collo Rosso]

One ugly bullet!

I'm using the roll crimp die as the seating die and that's what the flare won't fit up into. Not the best picture but this flare is a touch more than I need and it won't go. It stopped going in 1/2 a turn or so earlier. The point were the case scrapes going into the die has the bullet rocking on its bevel base.

 

[reddog81]

Sounds like it is a seating die problem. I would try sanding the mouth and interior of the seating die. I would remove the seating stem before doing any of this. I bet half an hour, some sand paper, and wooden dowels to wrap the paper around will take care of the problem.

 

[Collo Rosso]

I'm more than a little pissed at Lyman for not even returning voice mail. My solution was go with what has worked and that was to order a RCBS die set. Midway will have it at my door Tuesday. All my other die sets but 1 are RCBS and they've been without problem. That 1 die set is also Lyman and came in a box of 30+ year old unused reloading equipment. It's for 38spl/357mag and has worked OK. There's something about the RCBS dies that just works for me. I've had little problems (dies coming loose, popping decapping pins, touchy adjustment) with the Lyman sets that I don't have with RCBS. Maybe it's me.

 

[Nevada Ed]

With all the problems that you are having.................

I would go to the store and get a RCBS die........... done deal.

 

[rwsmith]

I would think.....

Sounds like it is a seating die problem. I would try sanding the mouth and interior of the seating die. I would remove the seating stem before doing any of this. I bet half an hour, some sand paper, and wooden dowels to wrap the paper around will take care of the problem.

I would think that a very slight tapered chamfer would allow the case mouth to close down as it enters the die.

 

[bigedp51]

The patent for the Lyman type "M" die expired and many die manufactures are using this type expander to make bullet seating easier. Below from the Redding website illustrations showing the type "M' expander. Bottom line, if you do not want to buy a new die set then just order a Lyman type "M" die to make seating bullets much easier.

I even have a type "M" die for my .223 to reduce neck runout during seating.

 

[Collo Rosso]

It IS a M type expanding die. Expanding is NOT the problem. After expanding it won't go in the seat/crimp die.

 

[ageingstudent]

I have a couple RCBS sets. I like them. I think you will like those in 45acp. They come with a taper crimp.

 

[2011redrider]

I got a newer set og 45 colt dies off ebay and they have the m die step too.

 

[Collo Rosso]

Got home and my RCBS dies were in the mail box.
RCBS seating/crimp die has a noticeably larger chamfer and the opening at the bottom of the chamfer is wider. The Lyman chamfer is more a rolled edge. The flared case that drags going in the Lyman falls in the RCBS.
I was thinking the Lyman die would work if I trimmed my brass. The problem is the longer cases with the wider flare not fitting.
I just don't want to start trimming pistol brass!

 

[ageingstudent]

Well even if you trimmed the case you would still have to flair it. I can't imagine ever having to trim 45 brass none of mine ever needed it. Can you measure the diameter of each and compare? Sorry to ask but my curiosity has the better of me. Glad you got your die set. Lock'em down and start crankin' brother.