Grains per pound and long draws

[Mark Hedges]

what are the rules on grains per pound with people with long draws?  Do you still have to keep at least 8 to be safe with most laminated bows?

I ask because using good form has increased my draw on my howatt hunter to 31"+ and I have had to reduce point weight to 125 or 100 grains to get good flight. I like the increased speed (this setup is for target/3d only) but am a little worried since I am now under 8 GPP at my draw.

Mark

[vermonster13]

Well, most bowyers won't warranty a bow shot with arrows weighing less than 8 grains per # and they usually prefer 9.

[R H Clark]

The longer your draw,the more stress.I think that bow would last longer with a heavier arrow.

One thing you REALLY need to know is the exact weight at that draw length.

[Bow n' errors]

FWIW, I had to go to 2219 shafts to get a paper tune at my 30" draw with either 145 or 175gr. points (which I wanted for FOC) out of my 51# SR Swift (FF string, 31" arrow).  With the 175's, the arrows weigh about 650grn total, 12.5 grains per lb. draw weight.  
They're probably too heavy for 3D, but I get the arrow weight and FOC I want, bullet hole paper tune, and a very quiet bow, even with the FF string.
Don't be surprised if you have to go higher than the spine charts recommend to get the arrow and performance you want at your long draw length.  Good luck.

[joe skipp]

Your light...both my bowyers won't warranty a bow thats not minimum 8 grains per pound. What weight is your bow at 31"? If the bow is AMO at 28", then you can almost add 2.5 to 3 lbs of weight gain for every inch over 28".

If you bow weight is 55# at 31", I would suggest a 2315 for aluminum.

[Mark Hedges]

The bow is labeled 40# @28" but I think it is a little heavier than that.  It was measured once and I was told it was 50# at 30".  I am going to measure it again - I use a clicker now so I will be able to get an exact draw weight at my draw.

Arrows now are Beman 500's full length.  Weight is 410-425 grains w/ 125 tips, depending on wraps, etc.

Mark

[Snakeeater]

I second the idea of a heavier arrow, more specifically a stiffer arrow to compensate for the longer draw length.

[Mark Hedges]

I measured the bow weight today and it was 55# when the clicker went off. The arrows weighed 435 grains for 7.91 grains per pound. That is only 5 grains short of 8 GPP so right now I don't think I am going to worry about it.

After I save up a few bucks I am going to get an ILF bow.  I plan to shoot it off a rest with a plunger, but are there any that can be shot off the shelf if I wanted to try it?  I am thinking of getting a 25" riser so I can make a 68" bow.

Thanks!

Mark

[R H Clark]

Mark
DAS has a few of the 21" Elite ILF risers on sale for $375.I paid $675 for mine.With long limbs it would give you a 66" bow that would work great with your draw.

The Elite is a fine target bow,not as much a hunting bow but would make just as good a hunting bow as any 25" riser.

You will not get close to that quality for the price in an ILF riser.DAS is a sponsor here.