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Old 11-29-2013, 12:28 PM   #1
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Converting cubic centimeters into grains.

My father-in-law and I were talking yesterday and he was saying that he is having a hard time finding a conversion chart on this. I tried googling but still also had a hard time. Any info would be appreciated. Thanks in advance...
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Old 11-29-2013, 01:16 PM   #2
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With respect to your father in law, trying to convert cubic centimetres in to grains is the same as trying to convert cubic inches in to ounces. Cubic centimetres, or inches, is a measure of volume while grains, or ounces is a measure of Mass (essentially weight).

Your father in law needs to convert grams to grains (both measures of Mass), and he will find a conversion for that.

Metric Converter - converters between metric and imperial units

One minor caveat: There are minor differences between US measurements and the Imperial measurements the rest of the English speaking world used/use.
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Old 11-29-2013, 07:27 PM   #3
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I believe that the Lee reloading folks have information relating cc's of volume to grain weights of different powders. Maybe try the Lee reloading manual?
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Old 11-29-2013, 10:08 PM   #4
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What Lee offers is a chart listing most powders and a "Volume Measure Density measure" for 1 grain of each listed powder. What goes unmentioned is that the listed VMDs are averages and, as such, not very accurate.

Which do you think is better way to go when you for producing something that will (hopefully) go "bang"? A, using a Volume : Mass conversion of questionable accuracy that gives you an average; or b, a mathematical equation that converts a Metric Mass measure to an Imperial Mass measure to the 4th or 5th decimal place if you want?
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Old 01-03-2014, 05:20 AM   #5
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Cubic centimeters in reloading refers to powder bulk density. This bulk density is dependent on the "settling" that has occurred--think of a full bag of potato chips vs the bag after shipping and settling.
You will find that your CC/grains measurements will differ from Lee's for this reason, and it will differ from day-to-day.
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Old 01-26-2014, 10:42 PM   #6
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Cubic centimeters, in reloading, is generally the bulk density of the powder. Grains is the weight of powder. Thus, each powder has it's own CC to grain conversion, which differs depending on how tht powder is compacted in a powder measure.
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Old 03-10-2014, 09:42 AM   #7
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As noted, cublic centimeters is a measure of volume, and grains is a measure of weight. A certain volume of powder will have a certain grain weight, to be sure, but not all powders weigh the same. Think of a cubic centimeter of oatmeal, and a cubic centimeter of birdshot, and it will illustrate the point better than I can explain it. Same VOLUME, vastly different WEIGHT.
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Old 03-10-2014, 01:03 PM   #8
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Not to mention that powder is compressible which can affect weight to volume, and absorbent (humidity climate versus dry climate) which can also affect weight to volume.

Again, which would you prefer to do when producing something that ignites, and produces "explosive" power (expanding hot gases), a conversion table of unrelated measures - volume (cubic measure) to mass (weight), of questionable accuracy affected by a vast number of factors, or a mathematical conversion of like measures of mass - grains to grams or grams to grains as required, that is accurate to the fourth or fifth decimal place?

But hey, it's your gun and your hand, so it's your call.
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Old 09-09-2020, 08:00 AM   #9
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Check this site : Unit converter
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Old 09-13-2020, 11:28 PM   #10
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How do I convert milliamps into cubic parsecs?
You can't convert volume into weight, UNLESS you are doing so for a material of KNOWN density.
I am sure what you want is the Lee chart for the approximate WEIGHT of powder that a cubic centimeter will hold of each powder based on the bulk density of the individual powder.
Lee reports VMD, which is the cc/gn for each powder. The numbers Lee uses seem to be for PERFECT packing, as I always have to move to one or two larger openings to get the weight I want.
Where I have used a powder in the Lee measure, I show the actual grains/cc that I get.

Powder [VMD cc/gn] gn/cc [actual gn/cc]
AA5 0.0623 16.0514 14.434
BL-C(2) 0.0645 15.5039
H335 0.0645 15.5039
US869 0.0651 15.3610
AA7 0.0653 15.3139
H450 0.0653 15.3139
680 0.0655 15.2672
748 0.0655 15.2672
AA 1680 0.0655 15.2672
296/H110 0.0656 15.2439
AA 2460 0.0656 15.2439
AA 2230 0.0657 15.2207
AA9 0.0657 15.2207
VEC SP7 0.0658 15.1976
H414 0.0661 15.1286
Ram Magnum 0.0661 15.1286
Mag Pro 0.0663 15.0830
630 0.0666 15.0150
760 0.0666 15.0150
VEC SP10 0.0668 14.9701
TAC 0.0671 14.9031
Norma 205 0.0672 14.8810
Norma 200 0.0677 14.7710
Norma 204 0.0677 14.7710
Lil Gun 0.0678 14.7493
HS7 0.0680 14.7059 13.905
X-Terminator 0.0681 14.6843
VEC SP3 0.0682 14.6628
VEC SP8 0.0682 14.6628
VEC SP9 0.0682 14.6628
AA 2520 0.0683 14.6413
Supreme 780 0.0684 14.6199
True Blue 0.0684 14.6199 15.250
AA 2700 0.0685 14.5985
AR2213 0.0686 14.5773
H870 0.0686 14.5773
AA 8700 0.0688 14.5349
N560 0.0690 14.4928
H380 0.0691 14.4718
Norma 201 0.0691 14.4718
Norma 203 0.0691 14.4718
Reloder12 0.0691 14.4718
N550 0.0692 14.4509
Enforcer 0.0693 14.4300
50 BMG 0.0694 14.4092
AA 2200 0.0694 14.4092
Reloder22 0.0697 14.3472
HS6 0.0698 14.3369 14.097
N540 0.0701 14.2653
VEC TU7000 0.0704 14.2045
VEC TU8000 0.0704 14.2045
Reloder15 0.0706 14.1643
Reloder19 0.0706 14.1643
Reloder 25 0.0707 14.1443
Big Game 0.0708 14.1243
N165 0.0712 14.0449
AR2209 0.0713 14.0252
H1000 0.0713 14.0252
N170 0.0713 14.0252
AR2206 0.0714 14.0056
Benchmark 0.0715 13.9860
IMR4320 0.0716 13.9665
Mag Rifle 0.0718 13.9276
VEC TU5000 0.0720 13.8889
Retumbo 0.0721 13.8696
4007 SSC 0.0725 13.7931
AR2208 0.0725 13.7931
H322 0.0725 13.7931
H4350 0.0725 13.7931
H4831 0.0725 13.7931
IMR7828 0.0725 13.7931
Hybrid100 0.0726 13.7741
H4895 0.0728 13.7363
IMR4895 0.0728 13.7363
Reloder 7 0.0728 13.7363
XMR-2015 0.0730 13.6986
Varget 0.0731 13.6799
N140 0.0733 13.6426
N160 0.0734 13.6240
IMR4350 0.0735 13.6054
IMR4831 0.0735 13.6054
XMR-4350 0.0740 13.5135
AR2205 0.0741 13.4953
2400 0.0742 13.4771
IMR4064 0.0745 13.4228
N150 0.0746 13.4048
Reloder 10 0.0746 13.4048
XMR-2495 0.0748 13.3690
XMR-3100 0.0748 13.3690
H4198 0.0750 13.3333
XMP5744 0.0752 13.2979
N130 0.0754 13.2626
XMR-4064 0.0755 13.2450
AR2207 0.0759 13.1752
IMR3031 0.0762 13.1234
VEC TU2000 0.0762 13.1234
H4227 0.0769 13.0039
IMR4227 0.0769 13.0039
N133 0.0770 12.9870
N120 0.0776 12.8866
N135 0.0777 12.8700
Autocomp 0.0787 12.7065
IMR4198 0.0792 12.6263
Silhouette 0.0803 12.4533 12.523
410 0.0804 12.4378
Pyrodex RS 0.0811 12.3305
ZIP 0.0816 12.2549
Pyrodex P 0.0823 12.1507
Longshot 0.0824 12.1359
N110 0.0833 12.0048
AA2 0.0838 11.9332 10.234
WSF 0.0840 11.9048
WSL 0.0847 11.8064
Titegroup 0.0848 11.7925
WSH 0.0859 11.6414
Blue Dot 0.0865 11.5607
Power Pistol 0.0889 11.2486 11.013
MP200 0.0892 11.2108
N105 0.0900 11.1111
3N37 0.0913 10.9529
VEC BA9 0.0919 10.8814
231/HP38 0.0929 10.7701 10.240
473AA 0.0975 10.2564
N350 0.0977 10.2354
SR4759 0.0993 10.0705
Pyrodex CTG 0.1015 9.8522
SR7625 0.1046 9.5602
MS200 0.1061 9.4251
Steel 0.1063 9.4073
Bullseye 0.1064 9.3985
N340 0.1066 9.3809
800X 0.1071 9.3371
N330 0.1079 9.2678
Unique 0.1092 9.1575 7.665
Solo 1500 0.1099 9.0992
Universal 0.1099 9.0992
SR4756 0.1100 9.0909
Herco 0.1122 8.9127 7.827
452AA 0.1171 8.5397
Trap100 0.1171 8.5397
VEC AO 0.1196 8.3612
IMR PB 0.1205 8.2988
WST 0.1205 8.2988 7.819
AS50 0.1208 8.2781
Norma 2020 0.1208 8.2781
N320 0.1210 8.2645
N310 0.1214 8.2372 8.510
Solo 1250 0.1220 8.1967
Green Dot 0.1262 7.9239
AA Lite 0.1266 7.8989
International 0.1266 7.8989
Competition 0.1278 7.8247
AA Plus 0.1296 7.7160
Titewad 0.1300 7.6923
Solo 1000 0.1331 7.5131
Pearl Scot 0.1333 7.5019
American-Select 0.1341 7.4571
700X 0.1343 7.4460
A Nitro100 0.1349 7.4129
VEC BA10 0.1350 7.4074
Red Dot 0.1413 7.0771 6.410
Norma 2010 0.1434 6.9735
Clays 0.1462 6.8399 6.549
E3 0.1489 6.7159
Royal Scot 0.1587 6.3012
Trail Boss 0.2172 4.6041 4.360

Last edited by noylj; 09-13-2020 at 11:30 PM.
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