Is there formula to use as a guide when figuring out how much point weight will reduce the dynamic spine? Does so many grains subtract a certain amount of spine.
I generally go by this rule of thumb:
"If your point weight is heavier than 125 grains, add 3 to 5 lbs for every 25 grains".
Anyone else have a general rule about this?
Not tryin' to cause any stink but how can you have a general rule like that when it takes more weight to weaken a stiffer arrow? I'm not tryin' to be a smart--- or anything I'm just tryin to understand how this works myself.
I think he means subtract.
Actually he said it correct. If you are trying to achieve the same spine and want a heavier point, in order too achieve the same arrow you need to add spine.
The inverse is also correct. If you have too heavy a spine you can add 25 gr for every 5# of spine you want to reduce.
Mike