New to 650...got a couple problems 9mm lead bullet

[pjames32]

I moved up to a 650 from a SDB a few months ago. Loaded 45ACP first with no major issues (1200 rounds). I've recently changed it to small primers and set up a tool head for 9mm with Dillon dies. I did use the primer alignment tool.

First problem is the priming stage. The tab that holds the case in position will not stay tight against the case. I align it and tighten it up and 15-20 rounds later I'm having to tap SOME of the cases to get the primer to seat. I load slow so that is not a big issue, just nagging. Should I use Loctite?

Second problem is more troublesome. I just ran 250 rounds. Mixed cases (none military or with the step inside) 4.6gr AA #5 and my own cast 128gr bullets (sized .356). They are a TC design with a bevel base lubed with Carnauba Red. Out of 250 I have 17 that fail to go in the case gauge. Of those 17 only one passed the plunk test in my Shield barrel and none passed in my 9mm 3" EMP. I've tried to vary the COAL with no improvement. The failed rounds were not all 1 brand of case.

I need some help please. I did not have this problem with my 9mm loads in my SDB.

Thanks!!

Paul

[noylj]

1) Call Dillon. I would use Loctite, but talk to them.

2) remove your barrel and see if the round Plunk.If they do, go shoot them and see how they perform.

Take a round that doesn't chamber fully, and coat the bullet and case with black marker (Magic Marker or equal). Drop in barrel and rotate a couple of times.

a) if there are "scratches" in the marking on the bullet, the COL is too long.

b) if there are "scratches" in the marking on the very edge of the case mouth, you haven't removed enough of the case mouth flare

c) if there are "scratches" in the marking on the side of the case just below the case mouth, you are over-crimping

d) if there are "scratches" in the marking on the case where the base of the bullet is, you are seating the bullet crooked and bulging the case. Get a seating stem that actually FITS your bullet or try more case mouth flare and start every bullet straight.

e) if there are "scratches" in the marking on the side of the case about 1/4" above the extractor groove, you didn't size the case enough (probably due to the Dillon die not going down enough on the case)

 

 

[pjames32]

8 minutes ago, noylj said:

1) Call Dillon. I would use Loctite, but talk to them.

2) remove your barrel and see if the round Plunk.If they do, go shoot them and see how they perform.

Take a round that doesn't chamber fully, and coat the bullet and case with black marker (Magic Marker or equal). Drop in barrel and rotate a couple of times.

a) if there are "scratches" in the marking on the bullet, the COL is too long.

b) if there are "scratches" in the marking on the very edge of the case mouth, you haven't removed enough of the case mouth flare

c) if there are "scratches" in the marking on the side of the case just below the case mouth, you are over-crimping

d) if there are "scratches" in the marking on the case where the base of the bullet is, you are seating the bullet crooked and bulging the case. Get a seating stem that actually FITS your bullet or try more case mouth flare and start every bullet straight.

e) if there are "scratches" in the marking on the side of the case about 1/4" above the extractor groove, you didn't size the case enough (probably due to the Dillon die not going down enough on the case)

 

 

2 D fits the problem

Thx

Paul

[Dirtchevy841]

Yep crooked bullets. Your own cast gives troubles. Had the same problem and had to modify stem to fit my profile. 

[pjames32]

I'm open to suggestions to modify my seating stem. The meplat on my bullet is smaller than the seating stem. What is the best "filler"??

Thx

[Steve RA]

You could try a round nose seating stem and see how that works for you.

[pjames32]

Steve....round nose did not help so I've used epoxy on the seater with a well oiled bullet. Will try again tomorrow.

RE: Problem 1 in the primer seater tab....Dillon said to use Loctite blue so that is setting up too.

[Dirtchevy841]

5 hours ago, pjames32 said:

I'm open to suggestions to modify my seating stem. The meplat on my bullet is smaller than the seating stem. What is the best "filler"??

Thx

A buddy of mine made me on for my profile shape. He’s a machinist and took the dillon stem copies it and made mine to spec. 

[noylj]

Best seating stem, IMO, is to ONLY contact the bullet's ogive and do so as low as possible. Your die maker can make a custom seating stem for you that is concentric (do you KNOW that the bullet you used to the seating plug casting was concentric).

[pjames32]

Update on my post. Problem 1 was solved with Loctite blue after a conversation with Dillon.

Problem 2 was partially solved by belling the cases 0.015". I had fewer rejects, but still too many. I tried epoxy in the bullet seater...…….it did not set up so I cleaned the seater and tried JB weld. It is partially set up now and the bullet I placed in it did release. Once it hardens 24 hours I'll give it a try. If the bullet fits a little off center I'll chuck it in the lathe and modify it to center. FWIW I am NOT a machinist, but can do simple stuff.

It looks like I may have a similar problem when I set up for 40 S&W. At least I now know what to look for.

Thanks for all the input!

Paul