I've been shooting 100 grains 777 pellets and the TC 250 grain Spitfires Out of a CVA Optima v2 for a few years. The blood trails I was getting were weak so I ended up switching to a Barnes 250 grain TMZ. They seem just as accurate but I'm wondering if I'd have better blood trails if I upped the charge to 150 or swapped to loose 777. Also would like to be able to shoot it consistently out to 150 yds or so. Thoughts or experiences you've had with a similar situation?