Do you think a Big Jim's 3 blade is too big for my setup?

[Zradix]

I'm shooting about 175ft/s out of my 46# @ 29.5" draw.
my arrow wt using 200 grain heads is 594grain.
Ends up about 13gpp.

If I went with the big J's head I'd have an arrow wt of about 644grains which would put me at 14gpp.
I'd estimate my speed would be 160+f/s.

I'd be using this setup for whitetails.

The trajectory and all I'm able to learn and deal with.
My worry is in the penetration dept.
I do know how to make a 3 blade scary sharp.

Do you think the big jim's 3 blade is just honestly too big for my setup?

Thanks
   

[BWD]

Nope...not too big on whitetails.

[rastaman]

At that speed and weight I don't think you would have any problem penetrating any animal in north America with your set up.

[JimB]

You should only lose about 5 fps with a 50 gr arrow weight gain.175 is extremely fast for 13 GPP.Bows I've chronoed would hit about 155-157 fps.

I thought the Big Jim head was 300 gr or are you using the glue-on?

At any rate,don't expect to lose a ton of speed adding 50 grs.I don't know how you will be tuned though if you are tuned now with 200 gr points.

[Zradix]

I'd be using the glue on.

I don't know what to say about the speed.
Little longer draw....optimistic chrono...?

I'm pretty sure new arrows would be involved for tuning as my arrows are cut about as short as I can go.

[JimB]

Well anyway,my bow setups 48-53# would needed 90-95 grs of total arrow weight to change arrow speed 10 fps.That's why I say app. 5 fps for 50 grs.The extra weight just increases momentum a little and for those that go by it,also increases KE slightly.I also don't notice a trajectory difference.

Sorry,I haven't used the head but I have looked pretty hard at them.

[TDHunter]

Sorry I've got to be on the other end on this one. 46lbs @29.5 so we're talking about a bow thats just over 40lbs @28, I don't care how long you draw it, I'd going with a razor sharp 2 blade. What type of bow is this?  That seems really really fast for a 46lb bow with 600grns

I might have to buy another!

[Zradix]

With you guys saying my speeds are pretty high you've got me questioning my chrono a bit....

Even though I'm not all about the speed, I do like to find out what my speeds are as a tool to find out my momentum.

It's just a Martin Savannah.

But even if I started at 165ft/s I should be around 155+ with the heavier heads.

I'm just curious to know if I should be able to push that big o 3 blade through 2 layers of deer hide and the gooey stuff in between.

Thanks for the help.
   

[Zradix]

The reason I'm asking is that I have a new bow being made that should be about the same draw wt and if anything a bit faster.

I'll be needing to get new arrows for the bow and would just as soon settle on a tip wt before I start the whole tuning process.

That big hole just sounds SWEET.

But I'd much rather have 2 smaller holes from my current VPA's than 1 big one from Big Jims's.

But I'll tell you what...2 holes from that Big Jim head would just be unreal..

[Izzy]

I'm shooting a 47# @ 28# bow with 650 grain tw arras for my big game set up and it has proven deadly. Shoot some speedy small game with your setup and you'll feel fine about using it for deer.

[swampdrummer]

I'm in the same camp. Kanati, 43@28 pulling 29.5 and shooting a 640 gr arrow. 30 1/4" vapor 400's. 325 gr. up front. Either 125 gr snuffers or eclipse 2 blades with 100 gr steel inserts and 100 grain brass inserts. FOC is up there. 23% maybe?  It don't get there fast but when it gets there it don't stop! Also drops like a rock past 20 yards but I'm not shooting past that anyway.

[sawtoothscream]

theres a guy on archery talk that shoots a 29.5" draw and a 47# bow.  he uses 346gr total weight w/ tip arrows with rage 40 ke broadheads (1.5" mechanical).  He is 3 for 3 so far this year. All pass throughs besides one that hit the off side shoulder on a qaurtering away shot.

Dont think you need a extremely heavy set up for deer.  maybe a wide 2 blade would be a good choice for you.

[Terry Green]

Originally posted by TDHunter:
46lbs @29.5 so we're talking about a bow thats just over 40lbs @28,  

No, that's not what he's talking about....you've got it backwards.

46#@29.5 is  more like talking about a 50#bow at 28.  That longer draw DOES make a difference.....Dr Physics says so.

For whitetail....all day long with your set up.  Deer are just a grocery bag full of shaving cream and a few tinker toys....and one ball joint...

Just stay away from the ball joint as there's no guarantee you will bust though it no matter what head you use.

If you DO want to make sure you have 2 holes, especially if the deer is reacting to your shot, then I'd say the VPAs like you said.

If Izzy's 47# set up killed these with a 1.5 inch wide head....surely your set up can shoot through a dang whitetail!!!!

     

     

[ranger 3]

Terry, not to start an argument but if you take a bow that is 49@ 29 1/2 wouldn't you be pulling about 4 1/2 pounds less at 28"

[Terry Green]

Ranger....

The 1.5 inch longer draw is going to perform MORE than a lesser draw of the same weight.  

Is not just the weight of the bow...but the draw LENGTH as well that propels the arrow faster.

Again...but reworded..

Performance of 46#@29.5 is more like talking about performance of same bow 50#s at 28.

[Zradix]

jeez Terry...
Those are some massive hogs Izzy put down.

That really puts things in perspective....what a plate!

Have any idea how close he got on those shots?

I plan on keeping my shots 20yds and under...hopefully well under.

[MikeW]

Terry, What!
 

46#@29.5 is more like talking about a 50#bow at 28.

Less draw is more weight? How does that make any sense?

[Jack Whitmire Jr]

Terry said it is more like a bow 50# at 28" . He is not saying this bow does that but the 46# at 29.5 is like 50# at 28".

But I respectfully disagree , he shouldn't be using a big 3 blade . Maybe a smaller 3 blade but not a snuffer or Big Jim head . But that is just my opinion .

With that said you'll be surprised how much an extra 1.5" of draw does for the power stroke!

[Zradix]

What he's saying is that a 46# at full draw bow drawn to 29.5" is comparable to a 50# at full draw bow drawn to 28".

That extra 1.5" in draw adds energy to the arrow during the power stroke....about as much as 4 extra pounds would.

[Terry Green]

Originally posted by MikeW:
Terry, What!
  Less draw is more weight?  

That's not what I said....but what I did say is pretty common knowledge....least I thought.