I didn’t post this yesterday because I was very busy after it happened. I spotted a 4 x 4 bull while driving on the boundary between units 53 and 52A. He was in BLM land. I quickly pulled over at a safe spot, got everything ready. However, I was not quick enough. He immediately jumped into unit 52A, and I could not take him.
My tag is only valid for the snake river zone, which is 53. Not the big desert zone, which is 52A.
Oh well.