Okay...here's the deal....
I'm going to provide you folks with a link too...
"Blacky's Bow Reports"
Here...(and pay no mind to the xbox conotation as it takes you where you need to be to understand what I'm attempting to convey/prove)
http://www.crossbowreports.com/rec-select.htm
Now...in the "Recurve Bows" section we see (2) former hotties...
Black Widow PAX: it stores 0.91 lbs of energy for every pound drawn
Hunters Niche Predator: it stores 0.95 lbs of energy for every pound drawn
Now while both bows are considered strong performers?...let's go ahead and click on the "Longbows" tab (at that link) and take a look at the...
Black Widow PL-X: where we see it stores 0.89 lbs of energy
Hmmm..let's see here...while there was only .04 lbs of stored energy difference between the two recurves?...Black Widows PL-X Longbow was only .02 lbs of stored energy behind their PAX Recurve so what's that tell us folks?...
What it tells us is that historically speaking?...there's just not been a whole lot of difference "Stored Energy/Performance" wise between Recurves and Longbows and in the past decade (or more)?...we've witnessed an entire new breed of R/D Hybrid Longbows that have soundly surpassed the performance levels of what were and still are highly regarded recurves but where all have been so close in stored enrgy/performance that of all the spine charts I've seen or know of?....
"ALL OF THEM GROUP LONGBOWS WITH REVURVES!"
because the ssad truth is?...
"THERE'S THAT LITTLE DIFFERENCE BETWEEN THEM"
until now...where limbs the likes of...
Border Hex7's: Store 1.16 lbs of energy for every pound drawn
Border Hex7.5's: Store 1.24 lbs of energy for every pound drawn
Border Hex8's: Store 1.28 lbs of energy for every pound drawn
so while there was/is less than a 2% difference in stored energy between Black Widows PAX Recurve and the PLX Longbow?...
SR LIMBS ARE STORING 20-30% MORE ENERGY THAN CONVENTIONAL LIMBS
and that's why Grandpa's spine charts and arrow weight recomendations that apply to both Longbows and Recurves don't work with or apply too...
"Super Recurves"
Have a Blessed Sunday Folks! :)