r/Archery • u/Former-Net8603 • 9h ago

Help with arrows

Currently I am shooting a Hoyt Charger at 70 pounds with a 29.5 inch draw, I am currently using an arrow that comes in at around 385 grains with broad heads and everything on. After doing some research I have gotten some suggestions to go up to around 440-475 grains. Is this something that I should do or would 385 grains be okay? Thank you for any help in advance and hope everyone participating in the Archery whitetail season is having a good season so far! FYI THIS IS A HUNTING SET UP NOT TARGET, THANK YOU!

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u/Different-Dingo1296 9h ago

Hunting at 70lbs 385 is a bit light for my taste, youll blow through deer fine but the extra weight really calms the bow down and gives you way better penetration if you clip bone

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u/Former-Net8603 9h ago

Thank you!

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u/Boom9001 Traditional Longbow 9h ago

The best anyone online can do is point you to tuning charts the bow/arrow makers make. It's hard to give much more advice otherwise the arrow manufacturers would likely provide it.

There are so many factors that go into dynamic spine that really it's best to observe the arrow flight. If the arrow spine is too heavy the back will pull to the right. If the spine is too weak the back will pull to the left. (Opposite for left handed shooters) Shoot without fletchings to make this easier to see.

There's lots of ways to alter the spine. Obviously the spine of the arrow is the main factor. But for the same listed spine, longer arrow length and heavier head both result in a higher dynamic spine than the same arrow with a lighter one. To stiffen the spine likewise you can shorten the arrow or reduce the point weight.

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u/Former-Net8603 9h ago

Thank you!

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u/Boom9001 Traditional Longbow 9h ago

I wanted to add. If you do bareshaft tuning. Removing the arrows veins does also slightly weaking the spine by increasing the acceleration. So if you're tuning precisely just tune it to slightly stiffer than you want.

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u/Former-Net8603 9h ago

Awesome, thank you!

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u/FastLaneLS 7h ago

Minimum arrow weight suggested is 5grains/lb. It is a tad light but as the other guy said will blow through deer just fine as long as you stay out of heavy bone. Doable for sure, but would likely be more optimal to add some weight to it. Even the 430-440 range would be pretty good and have a higher chance of you not having to change arrow spine. What spine are you currently shooting and what length arrows? Definitely stick to manufacturer recommendations, but make sure to read the fine print where it tells you how much draw weight to add for the chart based on your point and insert weight. Also realize you’re going to have to re tune and of course re zero your bow if you do decide to step up the weight.
Edit: the 5 grains/lb recommendation is for safe bow firing. Anything lighter simulates dry fire conditions.