Man there’s a lot to unpack here lol. Folks are gonna want to know your exact arrow set up as well as your bow speed, draw weight and length, brace, letoff and ata. The reason being is 25 grains on the front will effect your arrow spine. Depending on your rig it may effect it greatly or barely at all but the only way to find out is to answer all those questions above and plug the answers into a spine calculator table or app. Even the weight of your fletchings can matter for arrow spine. If you’re just wanting to know whether or not the added weight will change your point of impact the answer is yes. Probably not enough to matter at 20, def noticeable at 30, 40 will be enough to miss and so on. Hope this helps answer your question.


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Man there’s a lot to unpack here lol. Folks are gonna want to know your exact arrow set up as well as your bow speed, draw weight and length, brace, letoff and ata. The reason being is 25 grains on the front will effect your arrow spine. Depending on your rig it may effect it greatly or barely at all but the only way to find out is to answer all those questions above and plug the answers into a spine calculator table or app. Even the weight of your fletchings can matter for arrow spine. If you’re just wanting to know whether or not the added weight will change your point of impact the answer is yes. Probably not enough to matter at 20, def noticeable at 30, 40 will be enough to miss and so on. Hope this helps answer your question.


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Well, I'm new to this and probably don't have all the numbers. The specs list it at IBO 330 (Mission Ballistic). I just had the shop check my draw weight at 65lbs, 27" draw. I'm currently shooting a Vforce 340 spine arrow and according to the charts, I'm right where I'm supposed to be spine-wise.

My main question is whether I'll see a significant difference in flight? I'm guessing I won't, especially since I'm capping myself to ~40 yards this season, but I'd like some other opinions!

 

In my experience 25gr difference isn’t going to change much unless you’re already substantially underspined. For my rig at least 25gr causes about 16” more drop at 100 yards. But 20-30 yards you can barely tell.

 

If you have 125 field points screw those bad boys in 2 arrows and keep 2 with 100gr. Shoot at 10,20,30,40,50 and see what happens

 

I've done both. I just REALLY hate pulling out the 125's and my local stores don't have any of the right size for my arrow shaft diameter. I guess I'll just have to suck it up!

 

Go to Ebay and buy some points in the correct diameter, they are cheap. Go to victoryarchery.com arrow guide/open spine calculator and check your current spine, and spine with the 125 grain, check 150 too while you are there. Bare shaft tune tour bow at 20 yards with the different weights ans see hot it shoots.

 

exactly what i was going to say! it's a good site that can give you a good idea about your spine

 

Good thread as I’m interested in the FP to BH testing and methodology as well.

 

Great post, very good info for a beginner.
Thank you

 

I tried some 100 grain vs 125 grain just last week and saw very little difference out to 30 yards. At 40, I was about 3" or 4" low. My bow is tuned for bareshafts at 30 yards.

 

I just did the same. 30 yards was totally fine. 40 started to see some issues. I may just stick with 100 grain since that's what I've been shooting and it shoots accurately out to my comfort distance.

 

For my hunting arrows with broad heads - my 2413 aluminum arrows shot best going from 125 gr field points to 125 gr broad heads. My A/C/C arrows had 125 gr field points but needed to go to 100 gr broadhead rather than 125 to fly to same point of impact and to fly true.

 

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