RE: Accurate 257 Roberts load with 110 Accubond needed.
I use 49.0 gr. H4831 in a W-W +P case and Fed 210 primers. OAL is 2.937". My rifle is a long action Rem 700 so I'm not restricted on OAL as I have plenty of extra space in the magazine. This load out of my gun averages 1/2" at 100 yards and runs a little over 3000 grand according to my chrony.