View Full Version : Arrow weight

07-03-2013, 08:54 PM
What do you consider to be TOO light of an arrow for deer hunting? Been playing with a few new arrows, and even though they seem pretty light (330 gr.) I think they might be decent for deer. 350 spine, 125 gr. head. Should be around 16% FOC I'm guessing. 65# bow, and they should be flying at around 315-320 fps. Did some calculating, and the KE should be around 74. I know the momentum will be a little low though due to the light weight. What's your thoughts?

Sonny Thomas
07-04-2013, 06:47 AM
Critical as it is, I'd think arrow placement would be even more critical. But then differing parts of the country, whitetail deer can be small, 100 pounds is big in Florida and I've knock down at least one that was well over 310 pounds.

No real facts, but often heard is 350 gr being a minimum, but I can't remember my recurve wooden arrows being all the heavy.

Personally, I've used 375 gr arrows for years. Calculations give it 61 fp. which is enough for just about the biggest game on the North American continent. Personally, going after really huge elk, caribou, grizzly I'd opt for a far heavier arrow, 450 gr minimum.

Simple Life
07-04-2013, 01:10 PM
Think most of it is preference.I try to keep a good balance of speed and weight,last few years I have been around the 370 mark,but bumped it up around 420 with one of my set-ups this year.I do notice al little more penetration,but what is really noticeable is how much more the bow has quieted down.

07-04-2013, 01:25 PM
The bow I have set up for this arrow right now is amazingly quiet on the shot still. The lightest arrows I have hunted with before have all been at least 375 gr, and most in the 390 range. For deer at least. Turkeys I go a little lighter. With the bow at 65#, I am very close to the 5gr/lb. draw weight minimum. Still getting good penetration into targets as well. Both FP and BH. Going to keep playing with these, and decide if I want to try them on deer, or just use them for turkey. Only about 2 inches of drop from 20-30 yards using the 20 yard pin. Haven't shot from farther out, but I know the drop off will be more at longer distances. Less weight=less momentum.

07-04-2013, 04:55 PM
Might want to check your local regs to be sure, for instance here in Washington they have a minimum of 6 gr/lb... so for your setup you'd need 390 grains to be legal here. Some states have a minimum KE, which makes WAY more sense to me than a minimum arrow weight.

Consider this, in Washington, you have to shoot a minimum of 40 pounds, so if I were to drop my bow to 40 lbs, and shoot a 240 grain arrow, (again keeping with Washington rules), I'd have approximately 39 ft/lbs of KE and be around 272 fps... and according to Back Country Calculator, that's more than enough for medium sized game like a deer or antelope.

07-04-2013, 07:04 PM
Wabbit, in it's infinite wisdom, Kansas has a minimum arrow length, and minimum draw of 40# but nothing else. lol No arrow under 24 inches. Cross bow bolts aren't considered arrows. Talk about some senseless regs. Any broadhead is legal unless it is barbed, but they do not say what is considered barbed anywhere in the regs. On Backcountry Bowhunting, they say this arrow will have 73 ft/lbs KE and zip along at 316 fps. 15% FOC. Should be a deadly combo.

bob cooly
07-04-2013, 09:02 PM
A good 400 spine arrow will shoot out of most any bow. Mine are 375 - 400 grains and I don't need any more for deer under 200lbs.