I believe TAC is the same powder as AA2460, also. Or did someone already say that??
AA2460 burn rate is in between Xterminator/2230 and TAC. I use all three powders; they are all fairly similar but with mild differences in burn rate. Top loads with each usually end up with about 1-1.5gr less with XTerminator than TAC, with 2460 somewhere in between. That's for 5.56 loads, YMMV and don't use that to "convert" load data from one to the other of course, this is just a rough comparison.
BTW - along with the Western Powders load data, also download their burn rate chart - it's in a really convenient format that gives a nice visual comparison of similar burn rates across different brands, rather than just listing them all together in order. I consult that chart more than any other when comparing burn rates.
