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Metallic Cartridge Handloading and Bullet Casting
 The BSB SportzMan - A Forum for OutdoorzMen! : Metallic Cartridge Handloading and Bullet Casting
Subject Topic: Convert Powder Charges from Grains to CC Post ReplyPost New Topic
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TasunkaWitko
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Posted: 30áDecemberá2007 at 13:34 | IP Logged Quote TasunkaWitko

This can be very useful if you have a Lee powder measure or the dipper set.

------------------------------------------------------------ ------

Quote:

From www.leeprecision.com:

------------------------------------------------------------ ------

VMD explanation:

The Volume Measured Density (VMD) of a powder is the volume in cc's (cubic centimeter) that one grain of powder occupies. This can be used to calculate the dipper, disk cavity or powder measure setting required to obtain a desired weight of powder.

Example:

If a powder has a VMD of .1064 , and the desired charge weight is 4 grains,

4 x .1064 = .4256, or .43 cc's


This would translate to the .3cc dipper, (because the next larger one is beyond.43 ccs) the .43cc disk cavity, and a .43cc setting on the Perfect powder measure.

We attempt to keep a current list of newer powders and their VMDs (click here)

------------------------------------------------------------ ------

Determine a VMD on your own:

Using any setting on your powder measure (preferably a whole number), drop a charge of the powder you wish to determine the VMD for. Weigh the charge. Divide the measure setting you used to drop the charge by the weight of the charge. The result is the volume (cc) of a single grain of powder (VMD)

CC setting (powder measure setting)
--------------------(divided by)-------------------- = VMD (volume in cc's for 1 grain of powder)
Weight of the sample

It is very important that you repeat this process with any new container of the same powder because the powder companies allow themselves a 16% tolerance between batches. This can result in over charging if you work from the same setting and the next container of powder you get is more dense.

------------------------------------------------------------ -----

Powders and associated VMDs:

VMD    Powder

.06280 BLACK FFFG

.06800 BLACK FFG

.07190 BLACK FG

.06720 BLACKFFFFG

.13490 A NITRO100

.07515 ACC XMP5744

.08380 ACCUR #2

.06230 ACCUR #5

.06530 ACCUR #7

.06570 ACCUR #9

.06550 ACCUR 1680

.07300 ACCUR 2015BR

.06937 ACCUR 2200

.06570 ACCUR 2230

.06560 ACCUR 2460

.07484 ACCUR 2495BR

.06826 ACCUR 2520

.06847 ACCUR 2700

.07480 ACCUR 3100

.07547 ACCUR 4064

.07400 ACCUR 4350

.06880 ACCUR 8700

.13330 PEARL SCOT

.15870 ROYAL SCOT

.13307 SOLO 1000

.12200 SOLO 1250

.10990 SOLO 1500

.10630 ALLIANT STEEL

.13414 AMER-SELECT

.08650 BLUE DOT

.10640 BULLSEYE

.12620 GREEN DOT

.07420 HERC 2400

.11220 HERCO

.08891 POWER PISTOL

.14130 RED DOT

.07280 RELODER 7

.06910 RELODER12

.07060 RELODER15

.07060 RELODER19

.06970 RELODER22

.10920 UNIQUE

.07147 BENCHMARK

.06450 BL-C(2)

.14620 CLAYS

.06944 H 50 BMG

.06780 H LIL GUN

.11710 H TRAP100

.08110 H-PYRDX RS

.08230 H-PYRODX P

.07310 H-VARGET

.07130 H1000

.06555 H110

.07250 H322

.06450 H335

VMD Powder

.06910 H380

.06610 H414

.07500 H4198

.07690 H4227

.07251 H4350

.06530 H450

.07250 H4831

.07280 H4895

.06860 H870

.09260 HP38

.07120 HS6

.06800 HS7

.12660 INT-CLAYS

.08244 LONGSHOT

.10145 PYRODEX CTG

.08475 TITEGROUP

.13004 TITEWAD

.10990 UNIVERSAL CLAY

.13430 IMR 700X

.10710 IMR 800X

.12050 IMR PB

.07620 IMR3031

.07450 IMR4064

.07920 IMR4198

.07690 IMR4227

.07160 IMR4320

.07350 IMR4350

.07350 IMR4831

.07280 IMR4895

.07250 IMR7828

.11000 SR4756

.09930 SR4759

.10460 SR7625

.07410 AR2205

.07140 AR2206

.07590 AR2207

.07250 AR2208

.07130 AR2209

.06860 AR2213

.12080 AS50

.06770 NORMA 200

.06910 NORMA 201

.14340 NORMA 2010

.12080 NORMA 2020

.06910 NORMA 203

.06770 NORMA 204

.06720 NORMA 205

.07120 NOB REV#1

.13660 NOBEL 60

.12230 NOBEL 62

.11540 NOBEL 64

.15070 NOBEL 78

.14730 NOBEL 80

.13570 NOBEL 82

.08580 NOBELPIS 2

VMD Powder

.11780 NOBELPIS 3

.07200 NOBELRIF 0

.07200 NOBELRIF 1

.07200 NOBELRIF 2

.07200 NOBELRIF 3

.06932 R ENFORCER

.06838 R TRUE BLUE

.06612 RAM BIG BOY

.07080 RAM BIG GAME

.06711 RAM TAC

.08163 RAM ZIP

.06814 X-TERMINATER

.08922 MP200

.10613 MS200

.09130 v-3N37

.09001 v-N105

.08330 v-N110

.07760 v-N120

.07540 v-N130

.07700 v-N133

.07770 v-N135

.07330 v-N140

.07460 v-N150

.07340 v-N160

.07120 v-N165

.07133 v-N170

.12140 v-N310

.12100 v-N320

.10790 v-N330

.10660 v-N340

.09770 v-N350

.07011 v-N540

.06923 v-N550

.06900 v-N560

.09310 WIN 231

.06560 WIN 296

.11710 WIN 452AA

.09750 WIN 473AA

.06830 WIN 540

.06800 WIN 571

.06660 WIN 630

.06550 WIN 680

.06550 WIN 748

.06660 WIN 760

.12962 WIN AA PLUS

.08097 WIN ACTION PI

.07181 WIN MAG RIFLE

.08400 wSUPER-FLD

.08470 wSUPER-LIT

.12050 wSUPER-TAR


 

Quote:

From Lee's Modern Reloading, 2nd Ed. - pp 704-705:

VMD is the volume of one grain of gunpowder in cubic centimeters.

To find the colume of a powder charge, multiply the grains of powder by the VMD.

You can also convert from CC to grains if you divide the charge by the VMD.



Edited by TasunkaWitko on 30áDecemberá2007 at 13:38


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TasunkaWitko - Chinook, Montana

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Rockydog
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Posted: 30áDecemberá2007 at 17:20 | IP Logged Quote Rockydog

Taz, You been watching my mailbox? Postman just delivered a new set of Lee Dippers Thursday.   RD

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TasunkaWitko
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Posted: 30áDecemberá2007 at 19:26 | IP Logged Quote TasunkaWitko

nope, i sure haven't, rocky!

i've been wanting to post this VMD chart that i have in the book for quite a while, but the endless numbers and variations of powder kept forcing me to hold off. today, i finally decided to bite the bullet, so to speak, but when i went to lee's site to veryify some little piece of informaiton, i came across the same chart there, so simply copied and pasted rather than transcribed it. quite the time saver!



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TasunkaWitko
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Posted: 09áMarchá2009 at 10:54 | IP Logged Quote TasunkaWitko

this might help as a quick reference when using the dippers:

---------

http://www.leeprecision.com/cgi-data/instruct/Dippers.pdf

 



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TasunkaWitko - Chinook, Montana

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Ranch 13
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Posted: 09áMarchá2009 at 11:25 | IP Logged Quote Ranch 13

 Varify with a scale, charts often speak with forked tongue.

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TasunkaWitko
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Posted: 09áMarchá2009 at 15:40 | IP Logged Quote TasunkaWitko

scales can be knocked out of adjustment and if one is't paying attention this could be bad.

one thing in favor of the dippers - they can't be maladjusted!

having said that - any cross-checking is always good. i ahve two scales and when i use one i usually check it with the other to make sure everything is kosher. in all honesty, though, once a person gets a consistent method for using the dippers, it's pretty tough to screw them up by any measurable degree.



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