Powder Drop Troubles
#1
Posted 24 January 2012 - 12:10 PM
I cant seem to be able to drop a consistant weight from this thang--
9mm
range brass
Titegroup powder
Trying a 3.2-3.3g load
When I run 10+ through and weigh each drop, I'll get 3.1, 3.3, 3.4, 3.6, 3.2-- all over the place. I figured 10 drops would even out any problems when changing the adjustment.
I've read through here and around some--
Table is stable
Dissambled and cleaned the drop bar
dryer sheet in the bin for static problems
I've even tried sticking my tounge out when puttling the handle !
The only suggestions I havent tried are the aquarium pump to vibrate the bin and aftermarket knob/bar setups.
Suggestions on getting a consistant powder drop ?
#2
Posted 24 January 2012 - 12:21 PM
"What a wonderful world it is that has girls in it!" Lazarus Long
To be sure of hitting the target, shoot first and call whatever you hit the target.
NRA life member
NRA Range Safety Officer
#3
Posted 24 January 2012 - 12:26 PM
USPSA A-67338
Great things happen when you are not thinking about fast or slow and are just paying attention.
be
#4
Posted 24 January 2012 - 12:44 PM
New scale from Enos shopbad scale ?
Weight calibrate=good
#5
Posted 24 January 2012 - 01:33 PM
#6
Posted 24 January 2012 - 01:34 PM
US Army 1SG (Retired)
NROI Chief Range Officer
Match Director 2013 Ohio State Championship
http://www.ohiochampionship.com/
"Support" class shooter and proud of it!
#7
Posted 24 January 2012 - 01:43 PM
#8
Posted 24 January 2012 - 01:44 PM
#9
Posted 24 January 2012 - 01:49 PM
Also, I adjust mine a little tighter than recommended. Mine slightly pulls down on the measure when I push the handle all the way forward.
If none of this works I would dump the powder and make sure no foreign objects are in the bottom of the measure. Somewhere around here there is a thread about a guy dropping a bullet inside his hopper without knowing it. it gave him fits as well.
Also when you dump it check for clumping or other signs of contamination in the powder.
US Army 1SG (Retired)
NROI Chief Range Officer
Match Director 2013 Ohio State Championship
http://www.ohiochampionship.com/
"Support" class shooter and proud of it!
#10
Posted 24 January 2012 - 02:19 PM
Before you go with the vibrator, or the Arredondo powder bar and/or the UniqueTek micrometer, you can try polishing the insides to the hopper to a nice mirror finish. There is a thread somewhere here about it which also included a recommendation for a car wax to use. I don't think it's necessary to polish the hopper for TiteGroup, though. I loaded for about a year with TiteGroup without doing any tweaks on the hopper. I always had nice consistent drops, as well as small standard deviations for chrono values with my TG loads.
Before following the post above the blue nut, make sure that the powder bar is doing the complete travel from full foward, to the full back on the down stroke, and then back to full forward on the up/foward stroke with a dummy case with a dead primer in station 2. If the distance travelled is inconsistent, you'll have different amounts of powder being fed into the bar, or being dropped out of the bar.
After verifying the travel and the nut position, I would try a slightly different experiment. Instead of putting in a case into station 2, cycling the machine, pulling the case out of station 3, weighing, dumping/recycling the powder from the case, and starting over putting the case into station 2, I would get 12 cases of the same head stamp. I would take out the sizing/decapping die. I'd drop in the 12 cases into the case feed tube and run all of them taking them cases out when they get to station 3. Once I've run the 12 cases, I would weigh each of the 12, but only really pay attention to the weights of cases 2 through 11 -- ignore case 1 and case 12.
#11
Posted 24 January 2012 - 03:09 PM
#12
Posted 24 January 2012 - 05:30 PM
Blue nut on the arm is tight-- at least half way up the thread+ some.
I emptied the power container to be sure it wasnt stuck or powder settled funny-- so no forign objects.
It appeared the powder bar is traveling the required path, but I'll revisit that and check for the white thingie to be in position.
Updates later once I get in from the office and after a little recliner time.
#13
Posted 24 January 2012 - 07:16 PM
My electronic gave me variable weights. I ended up buying the Dillon beam scale and it is always consistent. See if you can borrow a beam scale to cross check your electronic. I dont trust my electronic scale. My beam gets to give the final answer.
#14
Posted 24 January 2012 - 10:30 PM
if your target load is 3.2gr, i don't know that it would be unacceptable to have charges from 3.1 - 3.3 gr (i.e. 0.1gr +/-).
#15
Posted 28 March 2012 - 05:25 AM
Edited by usmc0326, 28 March 2012 - 05:26 AM.
Si Vis Pacem, Para Bellum
#16
Posted 28 March 2012 - 07:30 AM
As stated, check the blue nut (on the press).
Also, I would never rule out the scale either. I have a 5-0-5 and I have to rebalance it every time I use it. My cheesy little digital would weigh the same charge and assign it multiple weights. I am going to get a 10-10 or what ever the nicer RCBS is.
Good Luck.
WG
Gene
----------------
NRA LIFE, SASS LIFE, USPSA LIFE
If your name ends in a "vowel", we are probably related, back in the "Old Country".
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