Will a 2020 work?? A 2018 seems too big?
Thanks, Trap
Do you have any idea what the actual shaft diameter of the FMJ is?
I think I remember reading they take 1916 but I could be wrong? I wish I had the right size as I just built some myself & would try my hand at footing.
Here we go,
http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=2;t=000098
I foot mine with 2018's and have no problems makes a real durable arrow.
wouldn't footing be somewhat redundant on an fmj? As I understand it is a carbon fiber shaft with an aluminum sleeve.
The FMJ 400 is .261" O.D. 1914's with an inside diameter of .2689" would be very close to ideal.
I suppose it would be redundant, but I'm gonna foot it to reduce the chance of mushrooming and to make a better head to shaft transition.
Trap
Just measured the FMJ 500. It has an O.D. of .255". Didn't realize there was a difference. Those are the only two sizes I have, so can't say about the other sizes' O.D.
If .261 is the OD,1916 may also work at .2649 ID and 2020 is .2725,
The 1916 may work, but it would be pretty tight. I don't remember where I got this recommended tolerance list, but it was on this subject:
.0073 perfect
.0052 too tight
.0129 too sloppy
That may be right.I've made some work that were awfully close but it does help to have a little clearance.If cutting with a tubing cutter,the ends get pinched in a little,no matter how careful you are or how well you deburr the piece.
You sometimes just have to try a sample.I've found some to fit that shouldn't,according to Easton's figures and vice versa.
The tolerance list could come in very handy.I had not seen that before.Thanks.
You may want to consider the broad head adapter ring they offer for the FMJ. BAR3 is the size spec'd out on the FMJ website.
Dayrl, Not sure if you've already bought your footing material or not but I just got some 1914s to foot my Axis 340s and I checked them on some FMJ 400s I have and they fit very well.