So I found a load for my accura. 290 grain T EZ over 110 grains of Black Horn 209 CCI mag Primer. I have a bunch of Hornady 250 grain sst bullets that i used to shoot in my triumph. I couldn't get the sst's to group out of the accura. I would like to shoot the sst's with the blackhorn 209. I bought some mmp hph 12 and mmp hph 24 sabot's but haven't had a chance to shoot any yet. Deer season started in iowa today so i don't want to change my proven load with the Barnes 290 grain bullets. Doe's any body have any suggestion's on what to try to make the sst's shoot an acceptable group with the new sabot's. Just trying to get some idea's where to start. Thanks