The hand-book of artillery - Joseph Roberts

Name.	Calibre.	Bore.		Grooves.			Twist.
Name.	Calibre.	Diameter.	Length.	No.	Width.	Depth.	Twist.
		in.	in.		in.
Sawyer,	24-pdr.	5.862	110	6	1.5	0.25	Uniform, one turn
							in 34⅓ feet.
Dimick,	32-pdr	6.4	101	6	2.0	0.2	Increasing from 0
						rectan.	to one turn in 62½
							feet at muzzle;
							twist to the right
Dr. Reed,	12-pdr. Siege	4.854	109	7	¹/₁₄th	.03 to 0.8	Increasing from 0
					circum.		at commencem’t
							to one turn in 50
							feet at muzzle.
Do.	12-pr. Field	4.636	74	7	do.	do.	Do. do.
Do.	32-pr.	6.425	110	3	¹/₆th	.085 to .012	Uniform, one turn
					circum.	circular	in 40 feet.
Do.	6-pr.	3.69	103.4	3	do.	.077 t0 .111	Uniform, to the
						circular	right, one turn
							in 25 feet.
Capt. Dyer,	3-pr.	2.9	44.5	8	0.4	.05	Uniform, one turn
							in 16 feet.
Do.	6-pr. bronze	3.67	57.5	16	0.5	.025	Uniform, one turn
							in 19 feet.

167]

Legend:
(A) = Weight of Projectile.
(B) = Weight of Charge.
(C) = No. fo shots fired.
(D) = No. of direct hits.
(E) = No. of ricochet hits.
(F) = Angle of Elevation.
(G) = Time of flight.

Name.	Weight of Gun.	(A)	(B)	1000 Yards.
Name.	Weight of Gun.	(A)	(B)	(C)	(D)	(E)	(F)	(G)
	lbs.	lbs.	lbs.				° '	"
Sawyer,	8822	45	5½	15	13	2	2
Dimick,	9300	51	6	7	5	1	2 15
Dr. Reed,	5000	22	3	26	14	9	2 15
Do.	1900	15	2	48	16	3	2	3
Do.	8500	50	6	10	8	2	2 15	3
Do.	1200	12	1½	28	18	4	2 10
Capt. Dyer,	250	9	1	28	16	5	2 25
Do.	880	14	1½	22	11	4	2 15

Legend:
(A) = Weight of Projectile.
(B) = Weight of Charge.
(C) = No. fo shots fired.
(D) = No. of direct hits.
(E) = No. of ricochet hits.
(F) = Angle of Elevation.
(G) = Time of flight.
(H) = Corresponding Elevation.

Name.	Weight of Gun.	(A)	(B)	2000 Yards.					Average Range.	(H)	(G)
Name.	Weight of Gun.	(A)	(B)	(C)	(D)	(E)	(F)	(G)	Average Range.	(H)	(G)
	lbs.	lbs.	lbs.				° '	"		° '	"
Sawyer,	8822	45	5½	119	32	17	4 30	6	4359	13½
Dimick,	9300	51	6	58	21	6	5	6½
Dr. Reed,	5000	22	3	30	5	8	4 30
Do.	1900	15	2
Do.	8500	50	6	84	19	8	5	6⅓	3665	11 30
Do.	1200	12	1½	52	9	5	4 45
Capt. Dyer,	250	9	1	18	4	2	5½	7	3270	13 30	15
Do.	880	14	1½

The following is a description of the several projectiles, viz:

Sawyer’s.—Flanged projectile; elongated; entire shell coated with an alloy chiefly of lead, and has a percussion cap on small end.

Dimick’s.—Expanding shell; elongated; cup of soft metal cast on rear end of projectile.

Reed’s.—The body is of cast-iron and the expanding portion is a cup of wrought iron, which is fastened to the body by inserting it in the mould and pouring the melted metal around it.