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deaddog
Administrator *AKA The Flying Gun* Joined: 23 April 2004 Location: Svalbard Status: Offline Points: 991201 |
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Posted: 11 April 2016 at 04:42 |
Have used a Hornady bushing powder measure for almost all loads up
to about 9gr for 30 years now. My question is about drum type measures like the RCBS Uniniflow or similar. With the bushings I'm limited to specific charge weights. Say my gun likes 3.3 gr but the bushings I have only make 3.0 and the next larger 3.6. With the RCBS I could get exactly 3.3 but is such a small charge repeatable or would I have to weigh each? The bushing measure is just so much faster. With real light loads you can get into pressure problems quickly. Just how light a charge you'd feel comfortable with in a drum measure? What equipment and procedures do you use for light charges? Edited by deaddog |
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RobertMT
.416 Rigby Joined: 12 March 2008 Location: United States Status: Offline Points: 4413 |
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Why not drill out 3gr bushing to 3.3gr. You could also fill larger one, with epoxy or hot glue and drill correct sized hole. Emory paper wrapped dowel should smooth it up, if needed.
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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I agree with Robert.
Assume you have the chart: https://www.hornady.com/assets/files/powder-charge- bushings.pdf Bushings cost about $5, so getting a smaller one and opening it up is just some emery paper on a dowel rod and use an electric drill (aka poor man's lathe). Once upon a time 55 years ago, I had one of the first Pacific shotgun loaders..no bushings, just complete bars, $10 each. I just modified (drilled one bar out)to take other company bushings. Worked good for 35+ years. Robert's, fill and drill is probably the simplest. +++++++++++++++++++++++++++++++++++ Also, measures are cheap on e-bay and last forever. If you will want more various loads, get a used Lyman 55. |
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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check this out. lots of good info. on your situation.
http://forum.saiga-12.com/index.php?/topic/79898-old- hornady-pacific-pistol-powder-measure-bushings/ |
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deaddog
Administrator *AKA The Flying Gun* Joined: 23 April 2004 Location: Svalbard Status: Offline Points: 991201 |
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Fill/drill is a good idea.
The charts are a guide but they are usually two sizes off from reality. I wish it was as simple as looking at the chart. I do have good records and logs from my previous loadings that are accurate. I'm still wondering how light you feel comfortable with a drum measure? DD |
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Fella's;
I'm not going to get into this one. My sorta-two measures are the RCBS Uniflow and whatever the charge bar on the Dillon is for that caliber. The Dillon is always set below max & well above min. With the Uniflow I'll measure about every 5th or 10th case full depending on my history with the load & powder. I do have both cylinders for the Uniflow. 900F |
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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Straight cylinder measures are very good.
for small charges small diameter cylinder (holes) are not as accurate; so a larger shallow hole is preferred. I think I'd make one out of 1/2" dia aluminum rod, calculating the volume compared to the 3gr you have. Make it smaller than calculated, easy to make open up. If Hornady is comfortable at 3 grs, I'd not worry if I made a 2.5 gr.. As you know as the charge goes down the bore gets smaller, and powder can jam. I visual check each round before seating a bullet. If is looks low or high, I kick it out and load again. |
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