FOR Cannons of the weight of the Iron Shot for Proof, but for Service, half the weight of the Shot is enough, especially for Iron Ordnance, which will not endure so much Powder as Brass Guns by one quarter.
For Culverings their whole weight of their Shot for proof, and for service, for the Saker and Falcon of the weight of their Shot.
And for Lesser Pieces, the whole weight of the Shot may be used in Service, till they grow hot, for then you must abate by discretion.
For proof of these Lesser Pieces, you may take one, and ½ of the weight of the Shot, therein also must be respect had to the strength and goodness of the Powder, which is to be ordinary Corn Powder.
THe Ladles ought to be so proportioned for every Gun, that Two Ladles full of Powder may Charge the Piece ; which in General Terms is thus.
The breadth of all Ladles are to be Two Diameters of the Shot, that so a Third may be left open for the Powder to fall freely out of the Ladle, when you turn it bottom upwards ; the length of the Ladles must be somewhat different, according as the Piece is Fortified.
For Double Fortified Cannons, the length of the Ladle may be Two Diameters and One half of their Shot, besides so much as is necessary to fasten it to the Head of the Ladle-Staff, which will require One Diameter more of Plate; (but this is not reckoned to the length of the Ladle, because it holds no Powder. For Ordinary Cannons the Ladle must not exceed Two Diameters of their Shot in length.
For Culverings and Demy-Culverings, the Ladle may be Three Diameters of their Shot, and Three and a half for Lesser Guns to load them at Twice.
If you would load them at once, you must double the length of the Ladle.
Observe this for a General Rule, that a Ladle Nine Balls in length, and Two Balls in breadth, will hold the just weight of the Shot in Powder.
But note, that Iron Ordnance must have but Three Quarters of the Charge of Brass Ordnance.