I mix lots all the time with excellent results. As a matter of fact I highly recommend it if you do it properly. Theoretically speaking, if you take multiple lots and combine them to create a single “super” lot, you’re mediating the polarity of each of the contributing lots.
That said, the actual method for properly blending extruded materials is not as simple as dumping one container into another and giving it a good shake. That will accomplish very little beyond creating layers of each lot (think about those containers of colored sand), effectively creating smaller quantities of each individual lot from the same container rather than a single mixed lot.
I worked for about 5 years with extruded polymers and resins at a previous job and by far, the best method for creating the most consistent blend is via funnel. It might seem like overkill and it can definitely be tedious, but I’ve found that this process does great to moderate lot to lot inconsistencies. Beyond that, it also helps your powder go much further without having to tweak your loads or worrying about shooting two separate lots during a match, etc.
