Thats what i use Steve they carry better in a slight breeze above 3mph though not as good in still conditions as the 36 batch gladly sold on. Nowt to do with barrels. Incidently 36 batch unpredictable in a breeze above 3mph needing an extra 60mm of windage around 10mph over the 35 batch. Both sold out i have only got two sleeves left.
For your benchrest you want the 36 batch as link above.