How do you get the varment grenade to group

[clarky]

A few years ago barnes bought out the varment grenade and i tried in my ruger vt in 204 I used ADI's bm2 starting with the maximum load for 32gn projectile witch is 28gns and worked up to 31 gns. this powder is roughly equal to hogdens benchmark.I testfired three shot groups inhalf grain increments and not one group went under an inch. All but one group were about 1.25"A few mates had the same result.Can someone give me loading data that works for them that will tighten up those groups