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Posted: 7/5/2014 8:49:04 AM EDT
| Have a question and am curious if any of you koolaid kids have added anything to your powder hopper to push down on the powder to reduce the variance you get with those troublesome powders, I have been looking at ways to maybe put a constant pressure downward so as the hopper gets lower the downward pressure remains the same and I'm thinking this would reduce the variance |
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Polish the inside and throat. Added bonus is tape a vibrator to the side. http://i171.photobucket.com/albums/u319/Hoodoo14/IMG_0192.jpg Added for visual aid http://img22.imageshack.us/img22/8132/rednecksdemotivationalp.jpg 
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... I have been looking at ways to maybe put a constant pressure downward ... The triangular powder baffle does exactly that. It bears the weight of the powder column leaving a constant weight pushing down. This is why you want to keep the hopper filled at least as high as the baffle. If you let the powder level go below the baffle (perhaps at the end of loading session), you should consider weighing every charge. |
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Found this item while looking but not sure it would be worth it to try, not like it's a ton of $$
Powder Weight |
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Found this item while looking but not sure it would be worth it to try, not like it's a ton of $$ Powder Weight Would that work? Seems like a vibrating unit that uh, wasn't a vibrator of the sensual sort, would be an easy sell, especially if packaged in a dillon friendly blue outfit. |
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Would that work? Seems like a vibrating unit that uh, wasn't a vibrator of the sensual sort, would be an easy sell, especially if packaged in a dillon friendly blue outfit. Quoted:
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Found this item while looking but not sure it would be worth it to try, not like it's a ton of $$ Powder Weight Would that work? Seems like a vibrating unit that uh, wasn't a vibrator of the sensual sort, would be an easy sell, especially if packaged in a dillon friendly blue outfit. For 1/2 that price, if that. You can make your own. Realistically, as mentioned in another reply, you keep it 1/2 full, minimum, there is no problem. Even with out the base polished, until i was below 1/4 there was no issue. |
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Did that awhile back and really helped but just looking to possibility reduce the variance more with troublesome powders I polished everything and even added a spring to the powder bar to reduce any wobble <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0546.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0546.jpg</a> <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0544.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0544.jpg</a> <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0549.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0549.jpg</a> I even knocked off the sharp corner to get rid of that dreaded "clunk" <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0541.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0541.jpg</a> Quoted:
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Polish to a mirror finish and you can get exceptional consistency with most powders... Did that awhile back and really helped but just looking to possibility reduce the variance more with troublesome powders I polished everything and even added a spring to the powder bar to reduce any wobble <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0546.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0546.jpg</a> <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0544.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0544.jpg</a> <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0549.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0549.jpg</a> I even knocked off the sharp corner to get rid of that dreaded "clunk" <a href="http://s798.photobucket.com/user/panther308/media/Dillon%20Powder%20%20Measure/IMG_0541.jpg.html" target="_blank">http://i798.photobucket.com/albums/yy268/panther308/Dillon%20Powder%20%20Measure/IMG_0541.jpg</a> Yes Polish up the powder funnel flare and inside the tube will help flow also. The "clunk" tab on the bellcrank is there by design to vibrate any sticking powder down the funnel. I just polished up the sharp corner on the bellcrank just enough so it would not dig onto the softer casting of the powder measure. You still want the contact. |
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Have a question and am curious if any of you koolaid kids have added anything to your powder hopper to push down on the powder to reduce the variance you get with those troublesome powders, I have been looking at ways to maybe put a constant pressure downward so as the hopper gets lower the downward pressure remains the same and I'm thinking this would reduce the variance Why do you think it is the weight of the powder column that affects uniformity of thrown charge weights? If there's any "coolaid" being drunk, it might be of the "I'll buy anything that you tell me might help" flavor. |
| The one powder is IMR 4895 in .223 cases, it sometimes varies as much as +/- .2g and gets worst as the Hopper gets down to 1/3 full and I had read in a few places that if put some downward pressure on the powder in the hopper it reduces the variance and a few of the folks that use the dillon low powder sensor have reported a decrease in variance and the one item I found was not a low powder sensor just a weighted plate |
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The one powder is IMR 4895 in .223 cases, it sometimes varies as much as +/- .2g and gets worst as the Hopper gets down to 1/3 full and I had read in a few places that if put some downward pressure on the powder in the hopper it reduces the variance and a few of the folks that use the dillon low powder sensor have reported a decrease in variance and the one item I found was not a low powder sensor just a weighted plate I have not found the results you are describing. With large kernel powders, I do find variations with a standard deviation of 0.1 gr, so as much as +/-0.3 gr is probable. What I don't find is sensitivity to powder column height. The single most important variable I have found is giving the powder time to fall into the case at the bottom of the stroke. Consistency of operation is also important but once you have mastered that you could still have variations if you do not give the powder that time to fall. Turn off all sources of sound (TV, radio, etc) and listen to the powder fall into the case. You might be surprised how long it takes. If you move the handle up before it's all in the case, you are going to exacerbate the variability. I haven't tried the vibrator thing but I'm not really sure it will work. Can someone who has this post their results with and without the vibration. |
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