maybe you could provide a little more info on what you are looking for and some one could help you.
Otherwise, you could go to the various bullet makers' web sites some show their products. Speer, Hornady, Sierra, Nosler, Barnes etc.
Or do you mean compare cartridges (loaded ammo)? You could go to the various powder makers and compare different amounts of powder used by, say a 30-30, 308, 30-06, 300 magnum to get an idea of different size - NOTE compare the same type of powder like 4895, or 4350. Hodgdon, IMR, Alliant for example.
A forum community dedicated to the great outdoors and hunting enthusiasts. Come join the discussion about hunting, fishing, survival, archery gunsmithing, optics, reviews, accessories, classifieds, and more!