I have both 270 t3 and Ar
270 I use ADI 2209 with 130 SST, 135 HPBT, 140 SST
223 I use ADI 2206H with 69gr HPBT and 55gr SP
Check ADI load data here:
http://www.adi-powders.com.au/handloaders/rifle.asp
I have found plastic tipped bullets in an AR wont fit in a mag easily unless seated quite deep - hollow points or soft points are better, Of course if they shoot ok and fit ok then no worries. I did try 53gr Vmax and they shot very well.
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