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Hot Topic (More than 10 Replies) Curtis and Harvey (Read 20981 times)
John Boy
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Re: Curtis and Harvey
Reply #15 - Jul 18th, 2011 at 8:20pm
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Austin Powder Company Test Continued

Additional Ratio Comparisons
KIK FFg (Lot 2004)
12 Mesh - 01 % Hold
14 Mesh - 03 % Hold
20 Mesh - 82 % Hold
30 Mesh - 14 % Hold
40 Mesh - Trace
Total - 100%
Net Weight - 16.75 oz

KIK FFFg (Lot Jan 2007)
12 Mesh - 00 %
14 Mesh - 00 %   
20 Mesh - Trace
30 Mesh - 91 % Hold
40 Mesh - 07 %
Pass      - 02 %
Total - 100%
Net Weight - 16.0625 oz
(Shiny angular grains)

KIK Fg (Lot 3901)
12 Mesh – Trace
14 Mesh - Trace
20 Mesh – 99.9%
30 Mesh – Trace

KIK 1.5Fg (Lot 3910)
12- Mesh - Trace
14 Mesh - Trace
20 Mesh – 95.87%
30 mesh – 4.13%
40 mesh – Trace

KIK FFg  (Lot 3910)
12 mesh - Zero
14 Mesh - Zero
20 Mesh – 70.68%
30 Mesh – 29.32%
40 Mesh - Trace

  
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John Boy
Ex Member


Re: Curtis and Harvey
Reply #16 - Jul 18th, 2011 at 8:31pm
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Austin Powder Company Test Continued

Picture of the Austin Company Powder
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To complete the tests, will load 4ea 38-55 rounds with 40gr of the Austin Powder.  Will run the rounds over the chronograph.  Then for the 4 shots (sure wish I had a pound of the powder  Grin) ... will weigh the foul, dry it and compare the percent of residue to the loaded powder charge.  This will really support or refute that the Austin Powder is Curtis's & Harvey Powder ... which I'm betting that it is because of the good test attributes so far
Stay Tuned!
« Last Edit: Jul 19th, 2011 at 12:11am by »  
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John Boy
Ex Member


Re: Curtis and Harvey
Reply #17 - Jul 19th, 2011 at 12:02am
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Having Wildman's Austin Powder, I became more curious about the Meteor Powder I have.  Is it or not C&H?  So, off to the basement again

Austin PowderDensity Test
0.998g/cc ... Powder Vibrated to settle in volume measure

Meteor Powder Density Tests 
Powders Vibrated to settle in volume measure
FFg - 1.046g/cc ... difference to Austin Powder = 0.048g/cc
FFFg - 1.052g/cc ... difference to Austin Powder = 0.054g/cc

Austin Powder Test
[b][u]Grain Ratio Test  sieves
10 mesh - No Hold
20 mesh - 40.25% Hold
30 mesh - 58.8% Hold
40 mesh - 1.02% Hold
50 mesh - Trace

Meteor Powder Ratio Test
FFg
10 mesh - No Hold ... difference to Austin Powder = 0%
20 mesh -56.7% Hold ... difference to Austin Powder = +12.45%
30 mesh - 40.5% Hold .. difference to Austin Powder = (-18.3%)
40 mesh - 2.8% Hold ... difference to Austin Powder = +1.78%

FFFg
10 mesh - No Hold
20 mesh -No Hold
30 mesh - 63.4% Hold
40 mesh - 27% Hold
50 mesh - 9.6% Hold
60 mesh - Trace
Difference to Austin Powder = Major Differences in Grain Size Ratio Percentages

Appearance & Grain Shape
The Austin and Meteor powders look exactly the same

Conclusions:
1.  The Austin Powder is FFg, not FFFg
2.   Very Strong Possibility that the Meteor Powder made in 1973 after Nobel bought C&H and both powders were made in Ardeer, Scotland ... is C&H production powder

So, to further affirm or refute both powders are C&H, when I do the range test, reloads will be Austin Powder and Meteor FFg Powder
« Last Edit: Jul 19th, 2011 at 12:08am by »  
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wildthing
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Re: Curtis and Harvey
Reply #18 - Jul 31st, 2011 at 6:25pm
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I tried the Curtis and Harvey in my 38-55, so far the results look pretty dismal. The first 5 loads were 40 grs. results were about 4 inches with 3 within an inch and a half. Second group is close to six inches, this was 43grs, using this same 317 gr bullet. Using 43.1 grs. of swiss11/2 I can get most groups around 1 inch . The curtis and harvey powder is much bulkier than swisss. the same 43 grs. with curtis and harvey fill the case about a quarter inch more than the 11/2 swiss. Next weekend I will try lighter loads with the curtis and harvey. I need to get hold of a chrony to check the speeds . The swiss loads clock around 1100  fps with extream spreads of 10 fps. All shooting is done off bags at 100 yards. john

  
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TDW
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Re: Curtis and Harvey
Reply #19 - Aug 5th, 2011 at 4:39pm
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At least the label on the C&H powder is post 1963. First year for Zip Codes.
  
"The farther North you go, the more things you will run into that will eat your horse."
S.P. Garbe, Absaroka-Beartooth Wilderness, 1980
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John Boy
Ex Member


Re: Curtis and Harvey
Reply #20 - Nov 17th, 2011 at 8:35pm
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Found this reading ... the Austin Powder Company plant blew up in 1968 - OOB, Out of Business!

That's All Folks
  
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