I used braid backer and got 300’ of copper on the 40’s
I Found a good reel calculator on line, it is an excel format. I used that reel filler for all my reels. The wire was off a little, reel was probably 90% full. All the copper and leadcore were really close to the calculation. I also have a South Chatham reel spooler with a digital counter. Worked out well for me.
Blood run copper
Berkeley big game mono
power pro braid
40’s
Backing Braid 50# 225 yards
50# Mono splice (for release) 5 yards
32# Copper 100 yards (300’)
50# Mono Leader 5 yards
Calculator said reel is 101% looking at it I would say it’s like 97% full.
50’s
Backing Braid 50# 250 yards
50# mono splice 5 yards
32# Copper 133.3 yards (400’)
50# Mono Leader 5 yards
Calculator said reel is 100.20% full. I’d say it’s 100%