Russian forum poster Epizikl has great skill with computer assisted drafting software: He has rendered in great detail a veritable multitude of different ammunition types and loads, including rare and obscure types that are rarely if ever seen constituted in the real world. His work can be seen in photo dumps on both forums.guns.ru and popgun.ru; some of his renders are reproduced below:

6.5×57 Federov; this was Vladimir Fyodorov’s “ideal” round proposed for adoption in the early 1900s to replace 7.62x54R and be used in his Avtomat. Instead, the Imperial Russian Army substituted 6.5x50SR Japanese, stocks of which were on-hand at the time. By Epizikl.

6.5×38 Grendel, featuring what appears to be either an aluminum or nickel-plated case, and a very interesting bullet that may have been inspired by 7N6, by Epizikl.
Epizikl’s renders are not without their errors, but in many cases it appears he is working from sources that I do not have – and wish I did! Like Epizikl, rendering ammunition via CAD is a hobby of mine, though I do not generally undertake to achieve the level of detail that his renders do. I highly recommend readers who are interested in ammunition click through the two links above, and look at every one of the many rounds he has lovingly rendered and posted online!