What weight do you want?
Ideally, both same weight or very close to the same.
The smallest 9mm I have is 115 grain and I think the largest .380 I have is 100 grains (may only be 95). I would be happy to send you one of each if you PM your shipping information to me. I might even throw in a 9X18 bullet!
jim, I get that both are .355 in diameter but are they the same length from the base to the tip?
They should be. You could take two out of the same box and use them for both, theoretically.
howlnmad, maybe this is a better question. Is it possible to load one .355 bullet onto a 9 mm case and a second bullet onto a 380 acp case? This may still not be the right question. Thanks
I think that brain fart is infectious because I had not ever considered this fact. I guess the marketing department is responsible for the boxes and the delineating factor is the bullet weight? I.e. if it is 100 gr or less it is labeled as a 380 bullet and if it is 115gr or higher it is marketed as a 9mm?
PlanoAttorney, it might be interesting to take a 9 mm case made by Company X and take a 380 ACP case made by the same company and pull both bullets out and measure the outside diameter and length and weight of each. Then look at each box to see if the bullet weight agrees with the measurements. We all know that companies who produce ANY product will "play games" with consumers - games that favor the company while "stretching" the truth. Classic example are serial boxes; open it up and it is mostly empty space. This means that the company can say that there are X grams when there are something less than X grams and still be within legal limits. And who's going to take a serial company to court because the amount of serial in the box was less than advertised.
So, howlnmad, the only difference in your example, assuming the primer, case and powder being used are the same except for a lesser charge in the 380 then the 380 should deliver a lesser muzzle velocity and lesser terminal velocity and terminal energy (foot-pounds) than the 9 mm.
Correct.
howlnmad, had not thought about those other combinations but that is because I stick pretty much to the 9mm and the 380 and am on a path to narrow things down to the 9 mm for several reasons. THANKS for the tip; VERY USEFUL.
SteveM, it would seem likely to take a bullet from a 380 ACP box weighing 95 grams and mount in onto a 9 mm case or to take a 9 mm bullet weighing 95 grams and mount it onto a 380 ACP case. They both measure .355 in diameter.
