Got a question. I shoot a 58@28 Mon River Possum Stick. 2018's cut to 29 BOP fly good with 125 Grizzlies, but I want to try the el grandes. How much will the extra 65 grains affect the spine of the arrow? Any info would be great.
You might check the Easton web site or Kelly's arrows (a sponser here)
Try them and see for yourself.I was shocked to discover that I could shoot 2020s out of a 64@29" longbow with 250 grain points up front (not counting inserts) with no ill effects at hunting distances, 30 yards and less.
Never know until you try, if it gets to week you can always cut the shaft a bit
QuoteOriginally posted by Ratatat:
...How much will the extra 65 grains affect the spine of the arrow?...
Of course your setup will vary, but here is a data point for you. I have been tuning carbons over the last couple of months. I recently had cut an arrow down to 29.5", put in a 50 grain brass insert, and screwed in a 125 grain field tip. I got bareshaft results indicating the arrow was decidedly too stiff. So I screwed in a 145 grain field top and the bareshaft result indication was the shaft was a tad weak.
20 grains took my setup from decidedly too stiff, to a tad weak. It doesn't take much to affect the spine for carbons. I don't have as much experience with aluminum but 65 grains seems to me like it would have a pretty significant impact.
Again, just a data point.
I think you will be fine. I shoot a recurve with 29 1/2" 2018 arrows for my 28 1/2" draw out of a 57# bow bow with 225 grains up front. Beyone that I get flight problems due to jumping over 18% foc. But this set up works and flys great.
PS I find carbons to have a very limited tuning range. I can get away with a lot more with aluminums and still have great flight.
The proof will be in the shooting, but I'd guess at most a half inch off your 2018's would bring them in, maybe less. You can also build out your side plate a tiny bit and maybe not cut at all. They might shoot fine for you the way they are, I doubt it but I would certainly try before changing anything.
In my experience 65 grains WILL make your spine noticeably weaker (assuming you bare shaft, see the A & H Archery web page which is a sponser here), certainly enough to re-tune and make a a quick adjustment. Remember, it may be as simple as adjusting brace height or building out your shelf a bit, etc. Certainly worth going through the motions to get those bad boys flying straight! Good luck,
Jim
Don't they have an El Grande that is 150 gr. I think it is the same size, just a different weight. Hap
Good point, there is an El Grande 150 that is just as wicked as the 190, just a tad thinner than the 190 but still plenty strong.
Most of my personal Grizzly use is 1) 125's and 2) 150 El Grandes but I don't get to hunt REALLY BIG STUFF either LOL!
Thanks a ton for all the input. I think I'll give them a try and see what happens. I hunt whitetails here in Southwest PA and that's about it, so maybe it's a little overkill but what the hay.