I asked this on another forum but no responses. I was wondering if anyone is familiar with both powders? How do they compare? I know 2700 is a double base spherical but don't know anything about Reloader 15 except it's very close in the burn rate charts to 2700. I don't want to substitute data, plenty is available for both. It's just that I have a lot of 2700 and was wondering if I'm missing something not using Reloader 15. I read 15 is used in M118 sniper ammo, a high recomendation. They are both close to Win 760 on some charts, maybe different lots of mass produced military powder? I don't know, just wondering.