I really like this game, really felt like a ww2 sniper, taking his time to put the target on sights, I love how you managed to fit it all into a postcard and keep it simple.
Although I feel it's a bit more luck based than I personally like, and I was thinking a roll and allocate mechanic for shot difficulty, shot position, and shot range might be better suited, at least for my taste. I was thinking about adding more disadvantages and advantages for each range, position, and difficulty. I'll try it out later and see what I come up with.
But yeah, good game, this one's actually worth printing!