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DAA powder funnel popping


J1mc
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I am having issues with the powder funnel popping when running a 1050 on an ammobot. I am lubing cases and that helps,  but the popping is sometimes very violent.  I have reduced flare on case mouth to as minimal as possible and seemes to make no difference. 

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Several things can cause the powder funnel to stick.

 

1) New brass is especially sticky.

 

2) Not all brass is created equally:

 

Obao3SB.png

 

3) Brass has galled on the powder funnel (look for a light brass ring or brass streaks).

 

4) You're pushing the powder funnel too far into the case (too much flare).

 

5) Your powder funnel is too thick. I just polished my powder funnel but you can also modify it.

 

modified powder through expander starline

 

6) As you have already learned, case lube make the press run smoother.

 

7) A million other reasons that I've forgotten.

Edited by 4n2t0
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On 1/6/2020 at 5:53 PM, 4n2t0 said:

Several things can cause the powder funnel to stick.

 

1) New brass is especially sticky.

 

2) Not all brass is created equally:

 

Obao3SB.png

 

3) Brass has galled on the powder funnel (look for a light brass ring or brass streaks).

 

4) You're pushing the powder funnel too far into the case (too much flare).

 

5) Your powder funnel is too thick. I just polished my powder funnel but you can also modify it.

 

modified powder through expander starline

 

6) As you have already learned, case lube make the press run smoother.

 

7) A million other reasons that I've forgotten.

 

My eyes aren't good enough to tell what the modification to the powder funnel is.

 

Could you describe it?

 

Thanks!

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On 1/6/2020 at 7:53 PM, 4n2t0 said:

Several things can cause the powder funnel to stick.

 

1) New brass is especially sticky.

 

2) Not all brass is created equally:

 

Obao3SB.png

 

3) Brass has galled on the powder funnel (look for a light brass ring or brass streaks).

 

4) You're pushing the powder funnel too far into the case (too much flare).

 

5) Your powder funnel is too thick. I just polished my powder funnel but you can also modify it.

 

modified powder through expander starline

 

6) As you have already learned, case lube make the press run smoother.

 

7) A million other reasons that I've forgotten.

 

I'm also having trouble seeing how you modified the expander on the right...  Could you post a close up image?  Thanks!

 

Is that a DAA powder funnel or a Dillon?

 

 

 

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1 hour ago, RaylanGivens said:

 

I'm also having trouble seeing how you modified the expander on the right...  Could you post a close up image?  Thanks!

 

Is that a DAA powder funnel or a Dillon?

 

 

 

Those are Dillon.

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Sorry for the late reply, please allow me to clarify...

 

I only needed to polish my MBF powder funnel with metal polish to get rid of the problem. The picture is a stock photo of a Dillon powder funnel which has been modified by Starline. It's hard to see but the radius of the funnel was modified to smooth entry and exit. When performed on a MBF powder funnel one must be mindful of the "step" in the funnel.

 

startip02.jpg.7306808466e2249633bc9fb54d4417b2.jpg

 

Edited by 4n2t0
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8 hours ago, 4n2t0 said:

Sorry for the late reply, please allow me to clarify...

 

I only needed to polish my MBF powder funnel with metal polish to get rid of the problem. The picture is a stock photo of a Dillon powder funnel which has been modified by Starline. It's hard to see but the radius of the funnel was modified to smooth entry and exit. When performed on a MBF powder funnel one must be mindful of the "step" in the funnel.

 

startip02.jpg.7306808466e2249633bc9fb54d4417b2.jpg

 

 

Thank you. Question: Isn't the step on the MBF powder funnel one of the reasons it does such a good job on flaring as opposed to the stock Dillon?

I know that I like it better than the Dillon anyway...

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  • 4 weeks later...

Update: 

Looks like after about 300k rounds and a couple of polishings my DAA exspander was worn out. Ordered a new one and it is working as it did originally.  The new one is dimensionally different. The funnel mod pic is what clued me in to check and see what a new DAA funnel looked like compared to mine. 

Thanks for the help. 

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