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Post by deadeyedon89 on Nov 27, 2015 18:23:34 GMT -5
Just wondering how you figure out pressures in certain powders....... i hunt all over the country but live in the "Lovely" state of Michigan which requires i shoot "Black powder Substitute" so i was going to use Blackhorn 209. I am shooting One of Jeffs guns and i know it is built strong but still don't want to hurt the gun or more importantly myself. He tested the gun with 105gr (by weight) with one of his videos.
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gar
Junior Member
Posts: 85 
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Post by gar on Nov 27, 2015 18:51:09 GMT -5
Bestill is our local expert with BH209 and I believe he advises 95 gr. by weight. I have shot 110 by weight but I may not be burning it all in my 30 in. barrel. Also from MI , don't believe pressure to be a problem with BH but the powder column may get quite long.
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Post by Kyle on Nov 27, 2015 19:07:50 GMT -5
Don,
Blackhorn 209 is a great powder, in my opinion the best sub powder out there for consistency in velocity and accuracy. If you choose to use this powder be advised that it is somewhat corrosive, but not nearly as corrosive as black powder or some other sub powders. Hope you develop an accurate load for your home state.
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Post by keith on Nov 27, 2015 20:10:17 GMT -5
Just wondering how you figure out pressures in certain powders....... With a strain gauge. |
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Post by Richard on Nov 27, 2015 20:59:01 GMT -5
The problem is, very few have access to a strain guage Pressure Trace instrument)? We have been lucky with TG running pressure traces. I had one that Jon bought and sent to me but it was a PIA doing traces along with accuracy work. Too much stuff to drag to the range and keep track of the data. I have a feeling TG does them right "in house" and never shoots for accuracy, just does the trace. You almost need a dedicated gun just for doing traces as you have that strain guage glued to the barrel.
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Post by keith on Nov 28, 2015 11:01:40 GMT -5
I agree, few own an instrument to measure pressure. Powley computers and QL are approximation tools.
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