I'm just beginning to play again after a long time away, actually starting over again, and bought a Sigma Martin CS-3 and I find that it's very hard for these 70 year old fingers to span 4 frets and so I'm wondering it a smaller guitar might be more comfortable. I've read some of the posts about guitar scale and measured mine to be 650. Looking at the posts, I've measured the span from pinkie to index fingertips when held in a comfortable position as if I were on the neck and the dimension is 110mm. Stretched the dimension is 160mm. Looking at information on the posts it's suggested that a 650 is the proper scale but the 650 I have is very difficult to reach 4 frets so I think a smaller scale would be more comfortable. Thus I've got a couple of questions.
First, what scale works best with the 110mm dimension? Second, can I find a guitar of such a scale for around $300? Since I'm just getting started I don't want to go nuts on the purchase and yes, I know that the dollars can make a difference. I'm a fly fisher and have gone from $50 rods to $900 rods and now make bamboo rods which can be much more. In rods the dollars can matter and I assume that the same is true in guitars.
Thanks for your advice.