I was looking at replacing my rebound spring in my 63-5 and I started to think I really don't know what the factory spring weight is . I'm pretty content with the 14lb. one's I've put in my 17's . Anyhow I would like to know if anyone knows the factory weights and pass along a little education? Thank you!

factory weight is widely reported to be 16 lbs. Like you I have found a 14 lbs. spring provides the best balance between trigger return speed and the weight of the single action trigger.