I used them in my CVA Accura last year and had excellent results with them. Two pellets with Barnes 250gr TEZ and winchester 209A primer was shooting sub one inch group at 100yds. Don't use them if you think they are going to be cleaner than Tripple 7 because they are not, you will get a crud ring and have to swab between each round. I aquirred an after market breech plug so this year I will be switching to Blackhorn 209. Most everyone will steer you towards loose powder as it is much cheaper and better if you need to fine tune your loads.
