So I would like to start by saying I've been a long time lurker of this site and have found it helpful so I've decided to share my experience. Last year was the first year I was able to develop a load that would shoot adequately for deer in my CVA Accura. When I first bought the gun several years ago I immediately purchased Blackhorn 209. I found I had ignition issues with the stock breech plug. I found the several threads by Ronlaughlin and others on this site and used the tutorials and images to cobble together a breech plug that would ignite Blackhorn 209 reliably. From that experience, I have purchased the correct vent liners and tooling to create another breech plug this year. The second issue I have experienced is excessive blowback. I purchased a bag of O-rings that were recommended in the forums here to place in the primer pocket. I have not tested them yet but will report back when I do. The third issue with the gun I have experienced is its extremely tight bore. The following are some of the bullet sabot combos and conical I have tried only to find that they load extremely hard: 300 Grain Hornady sst high speed low drag sabot Barnes SPIT-FIRE TMZ 50 CAL 290 GRAIN MUZZLELOADER BULLETS Hornady FPB 350 Grain conical From last year I had two loads that loaded with an acceptable force and grouped well: Federal Bor-Lock 350 Grain lead 90-100 grains by volume Blackhorn 209 Lead .44 Cal pistol bullets in a green sabot from the local muzzleloader shop. 90-100 Grains Blackhorn 209 by volume. I contacted Harvester Muzzleloading and they were kind enough to send me a sample of the scorpion Pt golds and sabots after I told them about my issue. These are still in the mail. I was also thinking possibly a .430" diameter XTP in a harvester crush rib green sabot might work. So to the CVA Accura owners or those with tight bores on this site what bullet sabot combinations have worked for you? I am planning on making the new breech plug/test o-rings, dropping my scope with lower rings, and testing load combinations around thanksgiving. Thanks!