RE: CVA Optima bullet question
In conicals the easiest to find heavier bullets would be the 275 grain .45 Powerbelts- in Aerotip or Hollowpoint. Powerbelt also makes a 300 grain .45 in their "Platinum" series. I believe Lane Nebraska has used this one- might want to ask him about it. I've only used the 225 grainers. There are some heavier conicals out there (like the ones from Bull Shop or Precision Rifle) but you can't find those in your local gun store- need to order them.
I only shoot a CVA .45 modern inline, and I used either a saboted .40 caliber 200 grain XTP or 200 grain SST/Shockwave. I've gotten several deer with the XTP with great results, and haven't seen the need to use a conical. Hope this helps!