Dug out the Armalite 15T today, and tried a couple of handloads with Berger bullets. Over on Page 7 it shot .87" and .77" groups with 77gr TMK's. Today it might have slightly improved with the 77gr Bergers, but in both cases a flyer out of the group opened things up. If I would have taken the best 9 of 10, then the groups would have been .84" & .73" with the OTM bullets. The load was 24.5gr of Varget under the OTM 77gr, in Lapua brass, launched with CCI Br4's.
Also tried some of the 70gr Berger VLD match, in an ASC magazine, allowing a little longer OAL. They did not do as well as the 77's, however.
Think I'll try this bullet again, adjusting the OAL and and powder charge. I have an extra Magpul PRS stock too, and it may help some as well. I think mainly the issue is I had not shot the Armlite in a couple years, and more practice is indicated
