Danne77
Danne77
11 posts
Joined September 2018

Unconcisted powder drop

Hello.

I just got my new SDB and it started with problems on my first reloading session.
The problems started when i adjust the amount of powder (took 1 hour to adjust it) my goal was 4,5 gr. i have the DAA turnknob with 1-18 on it, when i finally reached 4,5gr i ran 10 cases with weight and dump powder to be sure.
After 10 cases i weighted again and got 3,8gr, ran a couple cases weight and dump, still 3,8gr. adjusted to 4,5gr and started to weight every case. (did 100 that way) veri unconcisted powder weight, most where 4,4-4,6 gr but suddenly it where of by miles. it looked like this: 4.5, 4.4, 4.4, 3.1, 4,5, 5.2 and so on. My concern is the lowest where 3.1 and highest 5.2 on rounds. Its 2,1 gr in difference, dangerous!!!! I need to be at least 4,3 to get PF=126 (ipsc). and 5,2gr gives to much pressure for my gun. Anyone got any ideas?

Powder: Vihtavuori N330
Cases: GECO once fired 9mm
Primer: Fiocchi SP
Bullet: CMJ 124gr RN 9mm
dillon
Administrator
dillon
3,043 posts
Joined July 2007

RE: Unconcisted powder drop

If you are experiencing inconsistent powder throws from you Dillon Powder Measure you can call us at 800-762-3845. For the best customer service please be in front of your machine when you call. You may also check the following items:
• The Dillon powder measure hopper has in integral baffle molded into it. Start with the hopper at least 2/3 full above the baffle.

• Be sure the case mouths are flared at least .010-.020" larger than a sized unflared case mouth. This ensures the powder bar consistently travels the full throw.
• You should also check to insure that the failsafe tension rod is properly installed and has the correct amount of tension on the spring that is above the blue plastic wingnut.
• Throw and dump 10-15 charges before you begin weighing charges.
Danne77
Danne77
11 posts
Joined September 2018

RE: Unconcisted powder drop

• The Dillon powder measure hopper has in integral baffle molded into it. Start with the hopper at least 2/3 full above the baffle.

I filled it to 1 inch from top

• Be sure the case mouths are flared at least .010-.020" larger than a sized unflared case mouth. This ensures the powder bar consistently travels the full throw.

It does!!!!!!

• You should also check to insure that the failsafe tension rod is properly installed and has the correct amount of tension on the spring that is above the blue plastic wingnut.

I tightened the nut so i can get a businesscard between coils!!!!!

• Throw and dump 10-15 charges before you begin weighing charges.

I dumped 20 and this is the result after dumping: 4.7, 5.2, 4.1, 3.0, 3.0, 4.1, 4.2, 4.3, 4.7, 4.6, 4.0, 5.1, 5.5, 5.5, 4.3, 5.6, 4.5, 4.8, 4.5, 4.4, 5.0, 4.6, 3.9 gr powder.



It took me 2 hours to get 25 bullets because I had to adjust every powder drop to 4.5 gr.
Something must be wrong with the machine.
A single stage press is faster than this crap, Should have bought a Hornady instead!!!!!!!
Bucolic_Buffalo
Bucolic_Buffalo
64 posts
Joined June 2016

RE: Unconcisted powder drop

Some powders are known for causing trouble. Usually that is a stick powder. Some people have trouble with flake. Others with dry climates, have static troubles.

Be sure to slow down. The powder needs to fill the cavity in the thrower. And that can take time. Then slow down some more. You think you are crawling. But give the thrower plenty of time. You will still be loading faster than single stage.

Improving your technique when using a powder thrower will help you with all throwers. I have throwers from Dillon, Redding, Lyman, and Harrell's. They all require time for the powder to fall and fill the space.
Danne77
Danne77
11 posts
Joined September 2018

RE: Unconcisted powder drop

I have tried different speed. No difference.
When the rod is in end stroke down, waited for 7-10 seconds and in up position longer (because i only did 1 case at a time and weighting everyone before progressing)

It must be something wrong with the machine, getting from 3.0gr - 5.6gr on same setting. 2.6gr in difference is dangerous.
dillon
Administrator
dillon
3,043 posts
Joined July 2007

RE: Unconcisted powder drop

How much powder is in the hopper? Be sure to start with the hopper at least 2/3 full. Throw 10-15 charges and dump them back before you begin weighing charges.
Be sure the powder bar makes full travel before the handle bottoms out. The case mouth should be flared .015-.020" larger than the saized, unflared case mouth measures.
Be sure the failsafe rod is fully retracting the powder bar. At the end of the upstroke of the handle, when you push it forward to seat a primer, the coil spring that is above the blue wingnut on the failsafe rod should be partially compressed.
Danne77
Danne77
11 posts
Joined September 2018

RE: Unconcisted powder drop

I have already written that, but here it comes again!!!!!!!!!!!!!!!!!!!!!!!!

Powder 1 inch from top. 20 dumps before weighting

Case flare .020

Powder bar makes full travel before lever stops

Coil spring is so i can fit a business card between coils.

Need this solved and not asked the same questions over and over!!!!
Danne77
Danne77
11 posts
Joined September 2018

RE: Unconcisted powder drop

I have done some more testing and tinkering with the machine after i have found some tips on other forums.

I have polished the bottom in powder hopper, no difference
I have cleaned and dry lubed all moving parts in powder measure, no difference
I tried to double tap at both ends on stroke, no difference

But then i tried the rubberband from bottom of hopper to the metal thing sticking up right at the adjustment screw on powder bar, then i noticed that at the upstroke the powder bar stops for a fraction of second and when it goes it does with a bang (thanks to the rubberband and bang i noticed this)
its the linkage on powder measure for failsafe rod that stops the bar on its way back and i cant adjust it to go free from the stop notch, its the outerlinkage that have the "stop edge" sticking out and stucks on the edge of body on upstroke.

Could this be my problem for so various loads? And how do i fix this?

PS.
cant adjust on the blue nut because when the bar stops on lever the blue nut is long away from bracket, its when the blue nut gets to de bracket the linkage pulls the stopnotch and let the powder bar back.
Danne77
Danne77
11 posts
Joined September 2018

RE: Unconcisted powder drop

I have done some more testing. I removed the spring on powder bar lever so it doesnt lock on the edge, got nice full travel on powder bar without any hickups.
I also sprayed the hopper with antistatic spray, no powder sticks in hopper.
I ran a couple of cases and its still unconsisted powder drops.
4.5, 4.4, 4.4, 4.6, 4.4, 4.1, 4.2, 3.8, 4.5, 4.7, 4.6, 3.8, 3.4, 4.0, 3.9, 5.2, 5.1, 3.5, 3.1, 5.0, 5.1, 4.0, 3.8, 2.6, 4.0
its still to much variations 2.6-5.2. thats the difference from a pffft charge and a kabooom.

I would like to se some of the "no BS warranty" on this one,
I have spent several days on this and the only tips by Dillon is the same, Case flare, powder 2/3 in hopper, failsafe rod tension, throw and dump 10-15 charges before start loading.

I have done all of that.

If i dont get this solved soon, the blue press is leaving this house for a red one instead.
dillon
Administrator
dillon
3,043 posts
Joined July 2007

RE: Unconcisted powder drop

Do not use a rubber band, spring,etc; to retract the powder bar. It sounds like the failsafe rod is not set up correctly. Please take some photos showing the failsafe rod attached to the bellcrank, the powder bar in the extended position that also shows the powder measure body, and the powder measure and bar with the handle in the up position.
send them to sales@dillonprecision.com
LeftyTSGC
LeftyTSGC
26 posts
Joined February 2013

RE: Unconcisted powder drop

Just to be sure, do you know for 100% that you have the "SMALL" powder bar installed and not the large? What caliber was your SDB set up for when received?

Your dropping inconsistently which means it has to do with the amount of powder either free falling or being forced down.