Grains by weight or volume???

[Abarnes]

Here you go @Col. Batguano

BLACK POWDER & SUBSTITUTES
	Volume to Weight Conversion Chart			December 2012
					American	Jim	Jim	Hodgdon	Hodgdon
				Goex	Pioneer	Shockey's	Shockey's	Triple	Triple
	vol.	vol.	Goex	Express	Powder	Gold	Gold	Seven	Seven	Pyrodex
	cc	gr.	FFFg	FFg	FFFg	FFg	FFFg	FFg	FFFg	P
	6.67	100	101.1	104.6	78.4	88.3	83.0	77.2	81.4	76.0
	6.33	95	96.0	99.4	74.5	83.9	78.9	73.3	77.3	72.2
	6.00	90	91.0	94.2	70.6	79.5	74.7	69.5	73.3	68.4
	5.67	85	85.9	88.9	66.7	75.1	70.6	65.6	69.2	64.6
	5.33	80	80.9	83.7	62.7	70.6	66.4	61.8	65.1	60.8
	5.00	75	75.8	78.5	58.8	66.2	62.3	57.9	61.1	57.0
	4.67	70	70.7	73.2	54.9	61.8	58.1	54.0	57.0	53.2
	4.33	65	65.7	68.0	51.0	57.4	54.0	50.2	52.9	49.4
	4.00	60	60.6	62.8	47.1	53.0	49.8	46.3	48.8	45.6
	3.67	55	55.6	57.5	43.1	48.6	45.7	42.5	44.8	41.8
	3.33	50	50.5	52.3	39.2	44.2	41.5	38.6	40.7	38.0
	3.27	49	49.5	51.3	38.4	43.3	40.7	37.8	39.9	37.2
	3.20	48	48.5	50.2	37.6	42.4	39.9	37.1	39.1	36.5
	3.13	47	47.5	49.2	36.9	41.5	39.0	36.3	38.3	35.7
	3.07	46	46.5	48.1	36.1	40.6	38.2	35.5	37.4	34.9
	3.00	45	45.5	47.1	35.3	39.7	37.4	34.7	36.6	34.2
	2.93	44	44.5	46.0	34.5	38.9	36.5	34.0	35.8	33.4
	2.87	43	43.5	45.0	33.7	38.0	35.7	33.2	35.0	32.7
	2.80	42	42.4	43.9	32.9	37.1	34.9	32.4	34.2	31.9
	2.73	41	41.4	42.9	32.2	36.2	34.0	31.7	33.4	31.1
	2.67	40	40.4	41.9	31.4	35.3	33.2	30.9	32.6	30.4
	2.60	39	39.4	40.8	30.6	34.4	32.4	30.1	31.7	29.6
	2.53	38	38.4	39.8	29.8	33.6	31.6	29.3	30.9	28.9
	2.47	37	37.4	38.7	29.0	32.7	30.7	28.6	30.1	28.1
	2.40	36	36.4	37.7	28.2	31.8	29.9	27.8	29.3	27.3
	2.33	35	35.4	36.6	27.4	30.9	29.1	27.0	28.5	26.6
	2.27	34	34.4	35.6	26.7	30.0	28.2	26.2	27.7	25.8
	2.20	33	33.4	34.5	25.9	29.1	27.4	25.5	26.9	25.1
	2.13	32	32.3	33.5	25.1	28.3	26.6	24.7	26.0	24.3
	2.07	31	31.3	32.4	24.3	27.4	25.7	23.9	25.2	23.5
	2.00	30	30.3	31.4	23.5	26.5	24.9	23.2	24.4	22.8
	1.93	29	29.3	30.3	22.7	25.6	24.1	22.4	23.6	22.0
	1.87	28	28.3	29.3	22.0	24.7	23.2	21.6	22.8	21.3
	1.80	27	27.3	28.3	21.2	23.8	22.4	20.8	22.0	20.5
	1.73	26	26.3	27.2	20.4	23.0	21.6	20.1	21.2	19.8
	1.67	25	25.3	26.2	19.6	22.1	20.8	19.3	20.4	19.0
	1.60	24	24.3	25.1	18.8	21.2	19.9	18.5	19.5	18.2
	1.53	23	23.2	24.1	18.0	20.3	19.1	17.8	18.7	17.5
	1.47	22	22.2	23.0	17.3	19.4	18.3	17.0	17.9	16.7
	1.40	21	21.2	22.0	16.5	18.5	17.4	16.2	17.1	16.0
	1.33	20	20.2	20.9	15.7	17.7	16.6	15.4	16.3	15.2
	1.27	19	19.2	19.9	14.9	16.8	15.8	14.7	15.5	14.4
	1.20	18	18.2	18.8	14.1	15.9	14.9	13.9	14.7	13.7
	1.13	17	17.2	17.8	13.3	15.0	14.1	13.1	13.8	12.9
	1.07	16	16.2	16.7	12.5	14.1	13.3	12.4	13.0	12.2
	1.00	15	15.2	15.7	11.8	13.2	12.5	11.6	12.2	11.4
	0.93	14	14.1	14.6	11.0	12.4	11.6	10.8	11.4	10.6
	0.87	13	13.1	13.6	10.2	11.5	10.8	10.0	10.6	9.9
	0.80	12	12.1	12.6	9.4	10.6	10.0	9.3	9.8	9.1
	0.73	11	11.1	11.5	8.6	9.7	9.1	8.5	9.0	8.4
	0.67	10	10.1	10.5	7.8	8.8	8.3	7.7	8.1	7.6
	0.60	9	9.1	9.4	7.1	7.9	7.5	6.9	7.3	6.8
	0.53	8	8.1	8.4	6.3	7.1	6.6	6.2	6.5	6.1
	0.47	7	7.1	7.3	5.5	6.2	5.8	5.4	5.7	5.3
	0.40	6	6.1	6.3	4.7	5.3	5.0	4.6	4.9	4.6
	0.33	5	5.1	5.2	3.9	4.4	4.2	3.9	4.1	3.8
	0.27	4	4.0	4.2	3.1	3.5	3.3	3.1	3.3	3.0
	0.20	3	3.0	3.1	2.4	2.6	2.5	2.3	2.4	2.3
	0.13	2	2.0	2.1	1.6	1.8	1.7	1.5	1.6	1.5
	0.07	1	1.0	1.0	0.8	0.9	0.8	0.8	0.8	0.8
	This is a revision of the chart I put on Captain Baylor's Ranger Camp in 2005. Then I used an adjustable
	measure to measure 100 gr. FFg by weight then use that measure to produce the same volume of Black Powder Substitutes.
	This time I started with a 4.0 cc. Lyman dipper and weighed 5 samples of each powder, then averaged.
	Black Powder Loads are normally measured in volume. 15 gr. vol. is 1.0 cc.
	1.0 cc. weighs approximately 15 gr. This chart converts to weights of equivalent volumes.
	Weights were rounded to the nearest .1 gr. Duplicating results closer than the nearest grain using BP and subs is difficult and unnecessary.
	The old chart is still on the site at :
	Black Powder Conversions
	Your mileage may vary, but Black Powder Ain't Brain surgery
	Ounces to Grains--useful for adjusting shot charges using a powder scale that measures in grains.
					Ounces to Grains
					OUNCE	GRAINS
					16	7000
					1	438
					1.125	492
					1.25	547
					1.275	558
					1.3	569
					1.325	580
					1.35	591
					1.375	602
					1.5	656
					Drams to Gr. BP
					Dram	Gr. BP
					1	27.3
					2	54.7
					2.25	61.5
					2.5	68.4
					2.75	75.2
					3	82.0
					3.25	88.9
					3.5	88.9
					3.75	102.5

I wish I had found that chart 15 years ago