Brass insert question

[Str8Shooter]

Alright, I've got a question for you guys that have have used brass inserts. I'm no stranger to heavy tips but I'm tired of messing with steel adaptors to get the weight I want. I'm considering going to a brass insert in place of the aluminum inserts I normally use.

Here's the question. My setup consists of an Axis 500 with a 250 gr. tip at 30" and is tuned as good as can be. If I switch to a 100 gr. brass insert and a 150 gr. head will it be the same? I spend enough time tuning and I don't want to mess with a well tuned shaft if I don't have to. I'm hoping that some of you guys who have used them might be able to give me some advice.


Thanks,
 Chris

[deermaster1]

should be so near the same you'll never notice!

[Four2]

I'm going to tag along here and ask a follow-up question.  I just got some Axis 500 shafts and also want to use brass inserts at 100gr.  I'm shooting 50lb @28" and draw 28".  I want to use a shaft length of not less that 29-30".  How much weight can I put up front before I weaken the spine too much for that shaft?  I would like to go to about 300gr up front.  Do I need to move up to the 400 shaft?
Thanks St8Shooter for the thread.

[Paul Mattson]

You shouldn't notice anything diffrent.  I have found wt has little effect on the dynamic spine of the shaft.

[Str8Shooter]

Thanks for the replies so far.

I know that the weight up front will remain the same but what has me wondering is the insert length. The aluminum inserts are shorter than the brass so I'm wondering if the brass insert will cause the arrow to act slightly stiffer. I guess what I'm getting at is if the brass insert is 1/2" longer is that like shortening the shaft a like amount because that is less shaft to flex?

I'm more curious now so I think I'll have to experiment.

If anyone else has opinions let me know.

Chris


BTW Four2, depending on the bow you're shooting and the degree of centershot, string setup, and your release you could probably work out that shaft with a 300 gr. tip. I've used Axis 500's from 48-64# bows. I've got 400's but I never had much luck tuning them on bow less than 55# or so. But, that's me and every shooter is different. I have a buddy shooting a Widow 52@26, who can bareshaft an Axis 340 w/ 145 gr. tip perfectly. Go figure. Just try it and see if it works.

[Apex Predator]

Str8Shooter,
You are losing the aluminum insert weight as well.  I would think it would be very close.  

Four2,
Depends on what kind of bow you shoot and how close to center the shelf is cut.  There can be a huge difference in point weight required.

[Russ Clagett]

I do essentially the same thing you are thinking about.  I have used heavy tips with adapters in place of smaller tips and inserts, and saw no difference in flight.

Now i use inserts, heavy tips and adapters all at once for the highest FOC I can manage. The arrows are easier to tune, and you wont believe how well they fly and hit. I would put as much weight up front as the arrow will still fly with.

[GameGetter]

Four2
you might get 300gr up front with a 29" 500 but I really think you will need to go to the 400. I am shooting 50@28 with a 30" axsis 400 with 100gr brass incert and 200gr point and a 2" long 25gr aluminum foot. for 325gr up front.

[Downsouth]

I'm shooting a 50lb@28" Cari-Bow Peregrine, and draw 26". I'm trying out three Beman MFX classic 500's that I cut to 29.5" in length. They have a 100 grain brass hit insert up front with another 75 grain insert in behind it,(a cut down 100 grain insert). With a 125 grain point this gives me 300 grains up front and a total arrow weight of 600 grains with three 5 inch shield cuts.
 So far I like the arrows, they fly well and hit solid!

[Four2]

Thanks for the replies.  I already had the arrows ordered when I decided to try some EFOC arrows.  My bow is cut to center.  It will be interesting to see how much weight I can get up front on these shafts and how they fly.