Technical questions

[smdcosta]

Hi all,

I have some questions if you wouldnt mind helping me out.

I have a Bob lee takedown long bow which is 62 inch AMO 43 at 28


I have read that firing an arrow which is to light can be like dry firing an arrow. Is this true? I dont do much hunting but I do stump shooting and 3d shooting.

My arrows weigh around 29 grams (not to sure on the grain weight). What is the average grain weight I should be shooting. I have heard 10 or so grains per pound? They are gold tip 3555's XT Hunters with screw in field points and four inch feathers.

BTW does anyone know how many grains per gram??

Also could someone help me on the brace hight for my bow. I couldnt find anything on the bob lee website.

Thanks you for your help.

Madhava

[Zradix]

HI!

Yes, shooting too light an arrow is bad for your bow. The lighter the arrow the closer you are to dry firing it.
Almost every bowyer has a minimum grain/# arrow that you can shoot without voiding warranty.

I'm sorry I don't know what your brace ht should be. I'd put a 59" string on it and shorten it from there to see how it feels.

1 gram (g) = 15.4323583529 grains

29g x 15.43grn/g= 447.47grain

If your holding 43# you will be shooting 10.4grn/#.

That is in the very common grain/draw wt range.
Hope this helps.

[saumensch]

my boblee TD LB likes 8 1/4" brace height.

Youre arrow weight is fine.

[cyred4d]

Brace height is something you will have to play with to decide what is right for you. For myself I like to have the brace height about a quarter inch higher than the recommended. I would start around 8" and play with it from there.

[straitera]

Rule of thumb is 10-12 grains of arrow weight for peak draw weight per pound for hunting purposes. Generally results in suffucient speed & energy to maximize penetration through an animal. Less arrow weight for targets will achieve faster trajectory (7-9gpp maybe)?

[adeeden]

I think the reccomended brace height for the 62" longbow is 7 7/8" but agree with the others my Bob lee 60" takedown with long bow limbs likes 8 1/4".

Your arrow weight seems to be ok, but I bet those shafts are a bit stiff as far as spine goes for you.

[smdcosta]

Thank you guys for your valuable insight. It helped a lot.
Hope you are all having a great day.
regards
Madhava