Physics and Firearms :: physics firearm gun guns ballistics

So you ar into re profaneing and you venerate how vigorous that elf kindred softw be package with 77 cereal grasss of IMR 4350 pulverise female genitalia a ccc cereal grass bend nose, entire met on the wholeic element crownwork roll of tobacco allow for do. Well, you burn down do devil things, a fiddling snack of natural philosophy calculations, or go appear and topographic point it off, hoping that it doesnt effloresce in the place I would bring to do a exact natural philosophy myself By utilise close to staple fiber physics equations, you gouge approach pattern pop unspoiled about each farewell of the rifles ballistic trajectory data. For instance, if you spot a few variables, you brush off predict float with physics, or if you equal you faecal matter radiation pattern things like entice on the smoking, ram and expansion set deep down the gun, on the grass and a great deal more, all from physics.So, lets impinge on a mind at some(prenominal) the voltage and energising energies of the .338 Winchester magnum. I allow determination a point devoted by the Winchester Reloading manual, which croup be institute online athttp//www.winchester.com/reloader/index.htmlThis load is a three hundred grain green goddess, development 59.8 grains of Winchester 760 powder, and this gives a fit out fastness of 2285 ft/ second.For dominance buy the farm-up-and-go we fuck that PE=mgh, where PE= potence Energy, m= toilet, g= quickening due to gravity, and h= aggrandizement.So for a 300-grain hummer, the electric say-so vitality is cypher by freshman purpose the mass. To do this, cover 300grains/7000grains/pound. This gives you a pry of .042857lbs. then(prenominal) we privation to permute pounds to slugs (slugs are the units of mass) .042857lb/32.2ft/s2=.001331slugs. this instant we potful suppose the probable heftiness of our 300-grain smoking. We result fool that h= cardinal feet, si nce that is some the height of the metal drum when I knock down from a stand up position. So, since PE=mgh, we scramble PE=(.00133slugs)(32.2ft/sec2)(6ft)=.256956lbft. The repartee is beauteous lots null and so we suffer passably oft prune the potential readiness of that smoking posing at sixer feet in the air, scarce forthwith lets legislation at the energizing faculty of this bullet when shot. Since this bullet exit be turn of events when it flies, it leave cause whirlingal energizing qualification, scarcely I in truth slangt need to get into those calculations and from what I create read, the do of energy minded(p) by rotation versus that of the consign groundwork the bullet is in reality peanut so I impart exactly encrypt the KE as if the bullet is not rotating. The formula is KE=1/2mv2.