Shot the .010 for a year. Some days I was on other days off. Every time I was in the shop shooting I complained to friends how I couldn't see the green indoors. Finally I realized that that was my same problem outside shooting past 30yds and beyond. Ordered the .019 and a whole new world opened up. Inside outside, short or long distance I can still see it and my target like you should be able. Many complaints have arose about how the .010 isn't a very bright fiber and it just seemed "smaller" than an .010. There are no similar worries with the .019. It's bright and is just the right size.
Absolutely perfect. Didn’t even realize this was an option when I started with my target bow last year. For me... WAY better than the dots on the lenses.