It is always difficult to project for rookie players because I usually like to ignore rookie stats when projecting players whenever possible. What a player does as a rookie does not usually reflect very well what they will do on average for the rest of their career. If a player does do well as a rookie, I expect that player to be able to build on that as they are on the field more and used more frequently. Most NFL players improve in their second seasons if they were effective at times as rookies.
Seahawks offense
2015 1035 plays 489 passing attempts 500 rushing attempts.
	2014 1021 plays 454 passing attempts 525 rushing attempts.
	2013  973 plays 420 passing attempts 509 rushing attempts.
3 year average 1009 plays 454 passing attempts 511 rushing attempts.
Russell Wilson has averaged about 100 rushing attempts over his first four seasons. His passing attempts have increased by 7% in 2014 and 9% over the last 2 seasons. It is possible his total passing attempts increases again, now in his fifth season.  I am not sure by how much, but I wont be surprised if Wilson throws the ball over 500 times this season.
Looking at the 
game logs, it should be no surprise that Lockets use in the offense was erratic. He began with 4 targets in game one, then only one and two targets the next 2 games. In game 4 and 5 he had 5 targets, then two targets, then five and four targets, one, five, three for the 1st 11 games.
This averages out to 3 targets/game.
In the last 5 games of the regular season Lockett had 32 targets which was 6.4 targets/game. His targets doubled from the first 11 games.
In the playoffs Lockett had 9 targets in two games. So adding those to the last 5 games would be 41 targets over 7 games which is 5.9 targets per game.
Lockett had 664 offensive snaps as a rookie. This was the 3rd most snaps for WR. I would expect this to go up somewhat. Looking at 2014 Baldwin had almost 900 offensive snaps and Kearse had close to 800. If Lockett does play more than Kearse in 2016 I could see him having 800 offensive snaps.
Lockett had .104 targets per snap for the season.
	Lockett had .134 targets per snap in the last 5 games.
	Lockett had .131 targets per snap in the last 7 games.
	Graham had .130 targets per snap in the first 11 games.
	Baldwin .129 targets per snap for the season.
	Kearse .088 targets per snap for the season.
There is a definite split here when Graham was healthy, Lockett was not getting as many snaps or targets as he did in the last 7 games of the season when Graham was out.If Graham does return to full health this could have some impact on Locketts opportunity in terms of snaps and targets. Graham was the most targeted player on the Seahawks before he was injured. Graham was on pace for 108 targets before he was injured.
Lockett actually gets the most targets/snap after Graham was injured. Lockett was also more experienced by this time as well, and perhaps ready to be involved more with the offense by this time. Lockett had 350 offensive snaps over the first 11 games which was 31.8/game. In the last 7 games Lockett has 314 offensive snaps which was 44.9/game.
If Lockett were to get 800 offensive snaps and maintained .131 targets per snap this would be 105 targets over the season.
Graham accounted for 22.8% of Wilsons targets for the first 11 games.
	Baldwin accounted for 21.1% of Wilsons passing attempts last season.
	Lockett accounted for 14.3% of Wilsons passing attempts last season.
	Lockett accounted for 20.3% of Wilsons passing attempts for the last 5 games.
	Lockett accounted for 17.7% of Wilsons passing attempts for the last 7 games.
If 
Wilson throws the ball 500 times and Lockett has a market share of 20% of the targets, this would be 100 targets. At 18% this would be 90 targets.
Russell Wilson first 11 games threw 325 times. 29.55/game.
	Russell Wilson last 5 games threw 158 times. 31.6/game.
	Russell Wilson last 7 games threw 232 times. 33.14/game.
The last game was Wilsons highest of the season in a loss against Carolina. While they certainly do not want Wilson throwing 50 times a game, I could pretty easily see him throwing the ball 32 times a game. Pete Carrol indicated that they intend to play more like the second half of the season, than how they were in the beginning. Which suggests passing the ball slightly more frequently. At 32 pass attempts/game he would throw 512 times.
Here are Locketts offensive snaps by game after Graham was injured.
Game 12 48
	Game 13 38
	Game 14 46
	Game 15 55 1st and only time Lockett has more snaps than Kearse and Baldwin
	Game 16 50
	Game 17 39
	Game 18 38
It does seem like the Seahawks phased Lockett out of the offense somewhat in the playoffs. 800 offensive snaps would be averaging 50 per game.
I do think how healthy Graham is in 2016 will be related to how many snaps Lockett gets, but Lockett may be used outside a bit more, and be used with Graham more frequently than he was early on last season.
Lockett had a 73.9% catch rate as a rookie, which is pretty outstanding. If he maintains that, he should be getting over 70 receptions on 100 targets.
At 13 yards per target Lockett should get 910 yards, but if the receptions are higher, he should cross the 1k yard mark in 2016.
I do think there is upside for Lockett to get more targets than 100 if Wilson does throw the ball a bit more, for example if his passing attempts rose to 540 or something, then Lockett should pick up some more targets along with that. This will depend a great deal on how much the Seahawks run the ball. If their young RB group isn't healthy enough or up to the task, then Wilson might be throwing the ball a bit more.
Wilson spreads the ball around. So even with the possibility of increased pass attempts, I don't think Lockett gets more than a 25% share, and even that seems optimistic. If Graham is healthy I doubt Lockett will have much more than 20%. I do think 20% is possible, even if Graham is also getting 23% to 25%
So I think Locketts targets are capped at around 120 for 2016. At 120 at a 70% catch rate that is 84 receptions though, so being capped at 120 still offers some upside for good production. 84 x 13 = 1092 yards.
Lockett had 5 rushing attempts as a rookie. I could see him adding some additional value there as they may let him run 10-15 times this year. They had Percy Harvin run 11 times in 5 games and 14 times in 6 games including the playoff game. 2.2 to 2.3/game. Not saying Lockett is Percy Harvin, but I could see them having Lockett run the ball once a game. Theres a few more yards there.