Hi Travis
I have been using JB hollow for a while now and use a similar system to Dave , I also splice a small end loop and make a loop to loop connection with a twisted leader. I have tried splicing leader into the main line and finishing it with a serve (binding the connection between the hollow and leader)the same as you would finish a wind-on ,but found after repeated casting the serve began to wear pretty thin , so I prefer the loop connection.
The diameter of JB 130 hollow is 0.662mm and the JB solid 130 is 0.687mm , so there is not alot in it with the hollow being a touch finer.
You can splice approximately 60lb to 200lb mono leader into JB 130 hollow without any problems. I use a loop needle to form my end loops , but it can be done with a piece of doubled over single strand wire , and to run mono up the inside of the hollow I use pipe needles , the same as you would use with Dacron.
The other advantage I have found with JB hollow is if you happen to loose or wear the top section of line you can just splice a new section of line back in as needed , it's a 100% connection , no more half empty spools.(very handy if you are on a long range charter)
I hope some of the above info helps