Gotcha... nothing wrong with wanting to be different
I don't know how married you are to the 7.62x51 cartage, but it does pack quite a punch when fired. I've only used it (.308) in full sized rifles, so I cannot comment on a SCAR-H, but I would imagine the light-weight all-polymer frame would offer further control challenges.
If you want to look at some other 5.56 options (which you can purchase heavier than 60gr for) check out both the SCAR-L and the AUG A3.
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