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Powley Computer...
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Member Posts: 168,427 ✭
Anyone know of an online tutorial on how to use a Powley Computer. I've got part of it figured out...thanks.
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I googled "Powley Computer" and found some basics:
Ballistics by Homer Powley - Shooters Forum
"How to use....fill a fired unprimed case to the bullet seating depth with water..weigh..pour all the water out and weigh again. Subtract this from the weight with water and you have the weight of water. Multypy this by .859 ( averagr density ofIMR powders) and devide that by the bullet weight in grains...This gives you the C(harge)W(eight)R(atio). Find the intersecting line between the Sectional Density of your bullet and the CWR. This gives your optimum type of powser and the Weight of water times the LD of the powder gives you the amount of powder. All this is based on 44,000/45,000 psi. If your multiply the weight of powder times 1.05 you get an increase in velocity of 5%, but an increase inpresure of 10%.
Best Regards from the Hammock....James"
And if you scroll down the chart is posted.
http://shootersforum.com/showthread.htm?t=826
Powley Computer Notes
http://kwk.us/powley_notes.html
Ballistics by Homer Powley [Archive] - Shooters Forum
http://shootersforum.com/archive/index.htm/t-826.html
Also try: powley computer for handloaders, more...
ECC I have the original instructions. If you are interested I can scan them and email.
I just located some...thank you though!