The tallow should be melted first, then melt and add the rosin, and, lastly, the soap, bringing the mass to a heat that will make it very fluid.
The shells having been first thoroughly cleaned, fill them about one-third full of the composition, roll them slowly so as to spread the mixture over the whole interior surface, and then pour off the residue. This coating should be about five-hundredths (0.05) of an inch in thickness, and is expected, from a series of experiments made for the purpose, to prevent the premature explosion of shells in the bores of rifled guns.
The Bureau further directs that hereafter the charge of the 100-pounder, or 6.4 inch, Parrott rifle, shall be reduced to eight (8) pounds of rifle, or No. 7 powder, and that only the short shell or solid shot, not exceeding eighty (80) pounds weight, and spherical projectiles, prepared as directed in the Circulars of February 24th and July 6th, 1864, be used in this gun.
411. Exterior Dimensions of Boxes Containing Parrott's Projectiles.
| Long. | Wide. | High. | ||
| Inches. | Inches. | Inches. | ||
| 100-pounder, short | 1 | 18¾ | 8¾ | 8¾ |
| 60-pounder, short | ||||
| 30-pounder, containing | 10 | 25¼ | 11 | 15¾ |
| 20-pounder, containing | 10 | 25¼ | 10 1/2 | 13 |
412. Hotchkiss's Projectile for 20-pounder and 12-pounder Howitzer.
| 20-pounder, containing | 5 | 24 | 12 | 6 1/2 |
| 12-pounder, containing | 10 | 20 | 9 | 9 |
413. Schenkl's Projectile for 20-pounder and 12-pounder Howitzer.
| 20-pounder, containing | 5 | 24 | 14 | 7 |
| 12-pounder, containing | 10 | 22¼ | 9 1/2 | 11 1/2 |
414. J.A.D. Projectile for 20-pounder and 12-pounder Howitzer.