Id wager the Berger 95 VLD would be a fine candidate for the 6mm ARC. ARC was designed to function well with long slender 103 gr to 108 grain bullets. though does very well with lighter projectiles as well.
load accordingly for gas gun or bolt gun pressures & good results may be expected with a variety of propellants.
Bolt gun example below with a slow yet respectable target loads.
