Page 36
To know how much a bullet of yron will out flie a bullet of lead of the like diameter, being both dis∣charged out of one peece, with one like quantitie in powder.
Question.
If a bullet of lead of 24 pound weight, being shot out of a peece with ⅔ partes of the said bullets weight in powder, range at pointe blanke 240 paces, how far will a bullet of yron of like height range, being discharged out of the said peece at point blanke with the like quan∣titie of powder?
Resolution.
The proportion betweene a bullet of yron and a bul∣let of lead of the same height, I haue shewed by the theoremes and conclusions afore set downe: by which I finde that a bullet of yron being of equall diameter to a leaden bullet of 24 pound weight, the said yron bullet shall weigh 16 pound 2/7 partes. And for as much as the leaden bullet is shot with ⅔ parts in powder of his weight, that is, with 16 pound of powder, which is very neare the full weight of the yron bullet, I find that the said bul∣let of yron shall out flie the leaden bullet ⅓ part of the leuell range (that is) the yron bullet shall flie being shot as afore at point blanke 320 paces, that is, 80 paces further then the leaden bullet rangeth at point blanke. But if the peece out of which the said bullets were shot, had beene mounted at any number of de∣grees of randon, the range of the yron bullet would shorten somewhat of the ⅓ of the ouerplus of the said range: so that if the peece were mounted to the best of the randon, the said bullet of yron would not out flie the leaden bullet, not the ⅕ part of the said range.