Fielders Choice /Hit
 

Man on first. Texas Leaguer hit to right causing runner to hesitate. Ball drops and right fielder throws man out at second. I say batter credited with fielders choice, not a hit. Am I correct.
Regardless, where would I find a scorers rule book that would explain this?
Thanks

You are correct.

For OBR rules (Pro and 95% of the youth leagues) see 9.05(b )

I would call it a hit unless the br could of been put out at first.

. 2 . . . A base hit is credited to a batter when he advances to first base safely:

a. because of his fair hit (rather than because of a fielder's error);

1. It is not a base hit if any runner is out on a force play caused by the batter advancing toward first base.

2. Base hits include any fair hit which cannot be fielded in time to throw out or tag out a batter-runner or any other runner when he is being forced to advance. Illustrations are: ball is stopped or checked by a fielder in motion who cannot recover in time, or ball moves too slowly; or ball is hit with such force to a fielder that neither he nor an *assisting fielder can handle it.

b. without liability of being put out because: a runner is declared out for being hit by the batted ball (8-4-2k), or the umpire is hit by a batted ball (8-1-2b), or

c. because of a fielder's choice (2-14-1) when a fielder attempts to put out another runner but is unsuccessful and the scorer believes the batter-runner would have reached first base even with perfect fielding.

The correct answer is in the rule you posted.

This exact situation saved Nolan Ryan's 6th no hitter.