I am building a 7mm caliber and looking for the optimum cartridge. I want a belt less cartridge that has a mag bolt face, pushes a 180 in the 3000 fps range and isn't super long. I have a few I like but they have a few downfalls. I like the 7 stw but because it's so long it won't allow long bullets into the magazine. I like the 28 nosler but brass isn't available anywhere. I also like the 7mm lrm but have heard reports of difficultly tuning and getting brass. What other cartridges are similar? Yes I reload. Also this is for my hunting rifle so keep that in mind.