I'm pretty good at keeping up with what line is on what spool but I like to double check myself when I change spools by measuring the line diameter with a digital caliper.  So today I'm checking one of my spinning spools that is suppose to have 10# Big Game on it.  My caliper is set to millimeters.  I usually think in Imperial units but I'm smart enough to do metric so I leave it on millimeters.   I check the line with the caliper and it reads 0.305 mm.   I pick up a spool of 10# Big Game and the label says the diameter is 0.21mm.  I'm confused.  I pick up a spool of 12# Big Game and it's label says the diameter is 0.36 mm.   Now I'm really confused.  How can 12# Big Game be that much bigger than 10#?  Maybe I'm not smart enough to do metric after all.  I switch my caliper over to inches and measure the line again.  It's 0.012 inches in diameter.  This matches what's on the label.   Huh?   I pull up a unit conversion app on my iPad and covert 0.12 inches to millimeters and it gives me the answer 0.3048.   What?  I check the Berkley web site and it says that 10# Big Game diameter is 0.30 mm or 0.12 in.  So the label's metric diameter is wrong!  They've been making this stuff for a long time.  They should have the labels right by now.  Makes me wonder if I have some counterfeit line.  If you have a spool of 10# Big Game, can you check to see what it says the diameter is in millimeters.

37 minutes ago, Tennessee Boy said:

Makes me wonder if I have some counterfeit line.  If you have a spool of 10# Big Game, can you check to see what it says the diameter is in millimeters.

I think you got either a mislabeled spool or counterfeit...here's what I got (I use 10# BG as backing on my casting reels). Even the bar-code is different.

Japanese numbers are so easy.

PE# is traditional silk thread size grading - they use it for braid and mono. 

PE#1, #2, #3, or fractional diameters, e.g., PE#0.6 braid and PE#2.5 leader. 

 

I think I bought the line at Academy or possibly Walmart.   I know I didn’t buy it from a questionable source like eBay.  I’ve looked at several photos of labels online and there are many variations of the label.  Some show the diameter in different place.  Some don’t show the metric diameter.  I saw one on eBay with the same error as mine.  I wonder if it’s made in several different factories, each with it’s own label.  I wouldn’t think Big Game would be a target for counterfeiting.  It’s very cheap already.   

It's possible that they messed up a bunch of 10# spools and later corrected them.

 

I once had bought several bottles of a habanero carrot hot sauce. One bottle listed the ingredients correctly where the other one listed cayenne peppers but no habanero peppers but they tasted exactly the same, and I've had enough habanero carrot sauces to know.

2 hours ago, Tennessee Boy said:

I'm pretty good at keeping up with what line is on what spool but I like to double check myself when I change spools by measuring the line diameter with a digital caliper.  So today I'm checking one of my spinning spools that is suppose to have 10# Big Game on it.  My caliper is set to millimeters.  I usually think in Imperial units but I'm smart enough to do metric so I leave it on millimeters.   I check the line with the caliper and it reads 0.305 mm.   I pick up a spool of 10# Big Game and the label says the diameter is 0.21mm.  I'm confused.  I pick up a spool of 12# Big Game and it's label says the diameter is 0.36 mm.   Now I'm really confused.  How can 12# Big Game be that much bigger than 10#?  Maybe I'm not smart enough to do metric after all.  I switch my caliper over to inches and measure the line again.  It's 0.012 inches in diameter.  This matches what's on the label.   Huh?   I pull up a unit conversion app on my iPad and covert 0.12 inches to millimeters and it gives me the answer 0.3048.   What?  I check the Berkley web site and it says that 10# Big Game diameter is 0.30 mm or 0.12 in.  So the label's metric diameter is wrong!  They've been making this stuff for a long time.  They should have the labels right by now.  Makes me wonder if I have some counterfeit line.  If you have a spool of 10# Big Game, can you check to see what it says the diameter is in millimeters.

BG is a great line, but what it is not is consistent in diameter. I see it as a plus, as with a micrometer, I can reach for slightly more or less diameter between the nominal. 

36 minutes ago, Deleted account said:

BG is a great line, but what it is not is consistent in diameter. I see it as a plus, as with a micrometer, I can reach for slightly more or less diameter between the nominal. 

That might also suggest that it’s made in different factories.

3 hours ago, bulldog1935 said:

 

PE# is traditional silk thread size grading - they use it for braid and mono. 

PE#1, #2, #3, or fractional diameters, e.g., PE#0.6 braid and PE#2.5 leader. 

 

Plus the Japanese manufacturers have agreed upon standards for line diameter vs strength.  The industry self regulates and diameters are very consistent across all brands manufactured for the Japanese market.  American market lines are all over the map and tend to be severely underrated at their stated breaking points.  Big Game is known to be strong because it is typically bigger in diameter than competitors but labeled as an equal strength.  The Big Game 10lb is a similar diameter to Japanese 14lb mono at 0.3mm.  

Probably just a factory print error - someone forgot to update the metric conversion - just a guess. For those that may not know, this is how you can tell the manufacture date of any of their line (from an old post). Seems like it always “worked” on the spools I’ve checked. Neat way to tell how old your line may be, or how long it’s been sitting around.

 

“ALL Pure Fishing lines have a date code on them somewhere on the spool.

The code is read like this example:
C-12-10-1
C is the month starting with Jan. being A.
Ex. c- means March
12 is the day-meaning, well the 12th day
10 is the year

and 1 has no meaning. So why is it there? internal reasons

So examples date is.....March, 12, 2010 manufacture date.”