I agree with the 50# listed but feel they should all shoot the same if you raise the arrow weight. If they were all shooting 500 grain arrows your chart would be closer.
Why are you considering KE? There's not enough velocity to make it relevant.
yeah im thinkin a few thousand years of success IS proof enough.
I presume when speaking of the arrows you meant 10 grains per pound and not per inch. I've never shot through a crono but like Pat says after shooting for so many years you automatically know if the bow has good speed or is sluggish. An old rule of thumb was adding 100 to the bows weight (ie a 45# bow at your draw shooting 145 fps was considered adequate.
I presume when speaking of the arrows you meant 10 grains per pound and not per inch.
Is it time to bring up the "200 fps Challenge"?That's one of my goals...
Is it time to bring up the "200 fps Challenge"?
I don't think you'll be able to go that high in gpp ans still make it... I'd be thinking more like 6gpp?Is it time to bring up the "200 fps Challenge"?
Hmm that's a heck of a challenge for a self bow shooting 9 to10 gpp
I haven't been around a chrono for a while. I am curious how fast some of my bows are. I just am not curious enough to shell out the bucks for a chrono. I know when I have one shooting like I want it to. I make mine to hunt with and a bow being accurate, quiet and hard hitting is what I want. I think there is some kind of formula for calculating fps based on how many yards a bow will shoot. If anyone has the straight skinny on that I am interested. Don't know what it means, but I have a couple of hickory bows that will shoot 500 (or a little over) grain arrows over two hundred yards. One pulls 60 and the other around 55. Wonder how fast they are really shooting? I don't see anything wrong with you guys measuring these things and putting a little science to work on them. Hell, if it wasn't for a bunch of fellows smarter than I am, who have put a lot of thought into bowmaking, there wouldn't be so many great bows getting built.That sounds a good distance to me for those draw weights and arrow mass. A huge amount depends on the arrow of course.
what did we do before bows (and atl-atl's ;))?
Badger, I'd love to try an atlatl. Got an old 59 KS wallhanger that I've been thinking might make a pretty good speciman.Billy Burger recently posted an atlatl build along on his YouTube channel, primitivepathways. Looks like fun! I plan on giving it a try when I have some time.
Del, those shots were made with aluminum arrows. I haven't been able to achieve those results with my homemade arrows.
You have to wonder about hunters in NA going on about deer jumping the string and yet in New Guinea the deer wait for an arrow to cover 30 yards at 100fps.
Not sure if it worth differentiating between a Deer and an Elk. They are all Deer.
Is it really quiet to a deer though or simply a less threatening sound?
The "Deer" of New Guinea are more closely related to the NA Wapiti in at least one case. All are introduced species. My point is that the Deer versus Elk size difference is very blurry depending on what type of Deer we are talking about and the age of the animal.
A Sika Deer or Red Deer are cousins to our Elk.
You can probably still find a bunch of guys that will argue that a bow that will allow pass through on a whitetail is good enough for Elk.
Pat, PAhunter is preparing for an Elk hunt and appears to be shopping around for peace of mind that his gear will get the job done ;). Others were making reference to pass-troughs on whitetail deer. Not sure stories of passthroughs on whitetails are going to give PAhunter, who has experience with elk, the confidence he needs. That is all I was aiming at. :)
I am sure you are right about that. A 40 lb bow with a good weight arrow will work for elk, if you do your part. I wasnt trying to argue it wont, just not sure PAhunter would find the conviction he needs from the deer pass-through testimonials, and wasnt sure if people understood he is gearing up for elk hunt.You can probably still find a bunch of guys that will argue that a bow that will allow pass through on a whitetail is good enough for Elk.
Pat, PAhunter is preparing for an Elk hunt and appears to be shopping around for peace of mind that his gear will get the job done ;). Others were making reference to pass-troughs on whitetail deer. Not sure stories of passthroughs on whitetails are going to give PAhunter, who has experience with elk, the confidence he needs. That is all I was aiming at. :)
Why are you considering KE? There's not enough velocity to make it relevant.
I hear some archers discussing it yesterday and it made me wonder about selfbows. I'm looking for a good way to compare the potential penetration of bows given different DW and FPS. The goal would be to help answer questions such as:
How much more effective is a 60# bow over a 50# bow?
What kind of FPS should I be trying to get when hunting elk?
How heavey of an arrow should I be using?
Personal experience and opinions are great but I was looking for a more concrete measurement of effectivness. I was not aware the KE was not a relevant measure when it comes to bows. I'm just trying to enter the woods with confidence that my equipment will be effective.
I appreciate your advice!
what did we do before bows (and atl-atl's ;))?
Spears, sticks, and if you go back far enough flint rocks to scavenge off of others kills with. But it's not legal to hunt with spears in my state for some reason. :( :o
I thought that was 'courting' :-*what did we do before bows (and atl-atl's ;))?
Spears, sticks, and if you go back far enough flint rocks to scavenge off of others kills with. But it's not legal to hunt with spears in my state for some reason. :( :o
Before projectile weapons we used a thing which is now known as persistance hunting. Run after your prey until it overheats and cannot carry on.
Ha ha ha! Good one!!I thought that was 'courting' :-*what did we do before bows (and atl-atl's ;))?
Spears, sticks, and if you go back far enough flint rocks to scavenge off of others kills with. But it's not legal to hunt with spears in my state for some reason. :( :o
Before projectile weapons we used a thing which is now known as persistance hunting. Run after your prey until it overheats and cannot carry on.
Del
adb, yeah sure, and next you tell me a physiologist is someone who cures the sick using physics ;D ;D
I got a cow elk last year and I went through much of the same mental exercise as PAHunter.
Good one Del :laugh:
Like I said, I am no physician , but I see the equation as indication that an underlying universal law is that energy is a function of the relationship between mass and movement.
I was wondering why Momentum is not used more when discussing arrow dynamics. momentum = mass *velocity
Is it not applicable?
550 gr arrow with a very sharp broadhead from a 55# bow should do what you need done if you do your part.