Mine would only shoot bergers well. 175 elites and 180 hybrids. Trust me, I tried everything else in it and they would not shoot well in my gun. Myself and two other people I know who had a 7lrm have had them re-barreled.
Berger 180 Hybrids are the bullets to shoot through the 7LRM. Mine would shoot one hole groups. The elk in my avatar was taken with a 180 Hybrid at 650 ish yards in New Mexico.