Ok guys..need your help. I should have some time coming up in the next week or so to go back to the range and hopefully get my Triumph sighted in.

My supplies are in and here's what I have:
TC Triumph w/ Nikon Omega 3-9X40
777 50gr pellets
TC SW 250gr
Harvester Short black sabots
CCI 209 Primers

Ok, here's my plan (let me know if its good or if I need to change it).

I plan on sighted her in at 150 yards. I have been shooting, seeing where it hit and making the necessary adjustments, swabbing after every shot (so time comsuming though)--1 wet, 1 dry...reloading and shooting again. I have a notebook of the last time I went to the range and documented where the shot was at, the adjustments I made etc.

My MAIN shot where I hunt is about 140 yards or so....so I figured 150yds would be a great sight in yardage. Once I'm dead on at 150yrds, I was going to see what I am at 100 and possible 250yrds so I know what my rifle is going to do. 250yrds would probably be my maximum shot. I don't know the ballistic info for 2x50gr 77 pellets with CCI primers and a 250gr TC SW with Harvester short black sabot------so if any on can plug that info into a ballistic calculator and give me some more info before I take my first shot it be greatly appreciated.

Am I forgetting anything? Going to do anything wrong? How many shots do you think it will take me?

If ya'll don't remember I've been to the range twice. First time I figured out I had a bad scope and had to sent it back for a replacement. Second time I was trying different bullet weights/ brands. Now I'm deciding to stick with the "much successful" TC SW 250gr. If I remember correctly I have her 2 inches high dead center at 100 yards with the Hornadys I was shooting. It was dropping quite a bit at 200. Do I need to go 3x50gr 777 pellets to keep it from dropping so much??

Again I plan on going to the range and backing off 50 yards from the 200 yard targets to get my 150 yards.

ANY INFO GREATLY APPRECIATED!!!----already stressed-out DrAsus