Bullet weights are more often expressed in Grains. Length and diameter measurement should be self explanatory and listed in inches and or thousandths.Such as 1.560 inch long and a diameter of .452 inch. A deformed bullet can still yield a usable diameter by measuring the shank below the deformity. Some foreign bullet diameters are expressed in Millimeters,as 6.5 mm,easily converted to .264 inch. Length is the distance between the point and base,diameter the widest point of the shank. Bullet nomenclature can be confusing but this should get you started.
The pictures of my bullets are all filled with lead.Reloading scales are all in grains. Or you could convert grams to grains. Your best bet would be to pick up a reloading book as they generally have all the calibers and grains listed. The ABCs for reloading would be a good one to start with.
Any reloading supply dealer and many gun shops have scales,simple balance scales are inexpensive and accurate.You can spend as much as you want on a scale but the simple ones are very good. Most of the scales that folks use to weigh their gold and silver ring finds will weigh in Grains as well as grams or ounces,Available on Amazon,what isn,t? As has been said your bullets look like modern gilding metal jacketed pistol bullets.Commonly referred to as FMJ or Full Metal Jacket,maybe a couple of JHP,jacketed hollow point.The JHP usually don,t have exposed lead at the base. I,d hazard a guess that you have 9mm,maybe 32 auto,45 ACP, and a couple 44 Magnum or 44 Special.maybe 45 long Colt. Wild ass guess,so don,t quote me if I,m wrong. The little scale I use for rings is a Fuzion brand,from Amazon,cost me about 20.00 bucks plus shipping.It weighs in Grains,Grams,and Troy and Regular ounces.Like I said I am a newbie.
Any recomendations on a scale that measures in grains?
Also, by looking at the bullets what do they look like to you?
Would you have any recomendations on how to identify bullets?