Easton doesn't have a specific static spine/pound relationship that I know of, only a 'range'.

Yes, 2419 = 0.268" deflection.

(0.268")(0.825) = 0.221"

26 ÷ 0.221 = 117.6# spine, measured with an
accurate  spine tester using 26" centres & 2.000# weight.

The 0.825 conversion factor is mentioned in Stu Miller's "Dynamic Spine Calculator"
and in the PDF file of Kevin Gerlock's "Spine-O-Meter"

Elktalker how do you like your 100# bow? I've just ordered a 150# to 160# from JD. I'm going to order one from Big Jim longbow. If you find some 2440 shafts are spines beyond a 100#.  I shoot them from my 160# hill longbow.

Thanx reaper but I dont think the 2419 will work knowing their spine now. But I will keep you in mind.

Hey, Marlon you are the Man not many men strong enough to pull 160#. I might get my 100# in the mail today. I ordered a Grizzly Stik safary from Ed, he thinks it might take the weight up front and still be stiff enough.

Take your heavy Easton shaft, go the local hardware and find some birch dowels that come in all sizes, if not a perfect fit, sand, or wrap with painters masking tape. It won't cure and you can change things, but if your using standard nocks you probably will have a tough time getting them out, unless you predrill the dowell, you can use a long #6 screw and pull the dowell out if needed. Cut the dowell to fit behind the insert and slide it into the Easton, or graphite of your choice.

Another option.
If they come with UNI Busings and nocks you'll be able to push the dowell out. Or, find a way to make/install a UNI in your shaft. The dowells run about 0.59 cents, lot cheaper than a standard graphite, glass or alum. inside another.

You can pre-weigh everything, and figure out what will work.

I have an old magazine article on Paul Schafer hunting cape buffalo using 1916 shafts inside 2117 shafts for his 90# recurve. Might be close to what you would need for a 100# longbow.

Just did a quick check from my hoard of shafts and found that the 1916s will also fit the 2216 and 2219s and that the 20xx shafts will fit inside 2215s. That should give you a wide range of spines and arrow weights to play with.

hvyhitter,
Thanks for the info the 1916 fits nice into the 2219. Havn't shot it yet,if thats not stiff enough the 7595  fits in even better. and they're both .300  spine (aprox).

elktalker
Really interested in the results you get. I dont like carbon arrows and I have been planing on picking up/have built an 85+ recurve later this spring. In 2011 I am planning on treating myself to a buffalo hunt somewhere after getting deadbeat exwife #2 paid off and before I find #3.