I just recently bought a new Buckmasters G2SL bow set to about 60lbs. I am shooting Carbon Express arrows and I'm wondering what grain tip I should use. I am now using 100 grain field tips that I had but the diameter of the tips is too large so I need to purchase new ones. I have noticed more then desirable arc in my shot at 30 yards so I will be turning the bow up to around 65lbs. Any advice is greatly appreciated! Thank you!


-Brandon

Assuming a 27-29 inch draw length I would suggest a size 300 Carbon Express in which case a 100 grain point weight would yield a relatively good FOC balance and appropriate spine for your setup. If you bump up the draw weight to 65 lbs and your draw length is 29 inches or longer then I would probably start to consider a size 400 instead.

As for the diameter of the field point, I have found that a 9/32 size 100 grain tip to be just about perfect for most of the ICS style carbons on the market...including the CX arrows. The diameter of the tip is just a hair smaller than the insert/shaft diameter.

The draw length of the bow is 29", I am not sure of the size of the CX arrows I have, but they are Terminator Select 6075. They were recommended to me by the supplier. Can I tell what size the arrow is by looking at it?

Assuming: 29" draw length
CX Terminator Select 6075 arrows
65 lbs

Would 125 grain tips work? I have some left over Thunderhead tips that just need new blades and would prefer to use them if they will work well. Will 125 grain tips slow my arrow speed down vs. 100 grain? I won't use my old broadheads if they're the wrong weight.

PABowhntr, if you wouldn't mind, could you define FOC balance and spine or point me to a place that does? Thanks a lot!

One more thing- I had my bow set up by the shop I bought it from. They put on a release loop for additional length (my draw is actually around 30"). When the string is in the idle position (not drawn), the loop faces the arrow rest. So in order for me to clamp the release on it, I need to twist the string about 180 degrees. When I first picked up the bow it was not like this, but after about 10 rounds it twisted away. Any tips on this? Thanks again!

Edit: I just checked, and I was able to twist the loop so it faces the right way, but the peep I have is still facing the wrong way at idle. Seems like the string twisted. Looks like the I will have to go back to the shop AGAIN to fix a problem.

The CX arrows have the model and size printed on shaft. If you are getting an exagerated arc it sounds like you may be shooting the Terminators. Those are heavy arrows. Look on the arrow and post what model/size you have. If you are shooting under 65 pounds, I have had good luck with the CX Hunter 200's. If you are going to shoot 65 pounds or more, I would suggest the CX 300's or CX Hunter 300's. The Hunters are a little heavier but much lighter than the Terminators.

If you want to use your leftover 125 Thunderheads, do it. They are a great fixed-blade broadhead. You will have a slightly slower arrow but carry more kinetic energy than using a 100 grain tip. If you are going to hunt with a 125 grain broadhead, practice with a 125 grain field tips. The 9/32 field tips fit fine like PABowhntr said.

FOC(Front Of Center) and spine have been talked about in this forum. You can look through past threads or just do a search on the web. You will receive hundreds of results.

The string on your bow is stretching/twisting. You can try twisting the string back or move your string loop around so it faces to the rear. Just make sure that your peep is aligned at full draw or you won't be able to see anything.

Here the address to the Carbon Express website:

http://www.carbonexpressarrows.com/arrows_start.shtml


Post what kind of arrows you are currently shooting and we can further help you out.

Steve

Thanks for the help. The 125 grains won't have any adverse affects besided a slightly slower arrow speed? Maybe I'll jack her all the way up to 70lbs and see if I can handle it .

spitz,

Sorry for not replying sooner. G2 covered most of it but to further help with your question I suggest checking out www.bowjackson.com . You can play with his various calculators which give you things like FOC, arrow weight, Kinetic Energy, etc....

As for not having the 125 grain point affect anything.....that all depends on the specifics. Putting a heavier point on any arrow affects the arrow's spine and FOC balance....especially the former if you are going to pump the draw weight up. Increasing draw weight and increasing point weight together can greatly weaken the arrow's spine thus decreasing accuracy and penetration.

Hope this helps.

Spitz,

"Assuming: 29" draw length
CX Terminator Select 6075 arrows "

Oops! Guess I missed that little bit of info in your earlier post. [&:]

If you look at the Carbon Express website, those shafts weigh 10.7 grains per inch. They would be good shafts for larger game like Elk or Bear but kinda overkill for Whitetail Deer. If you switched to a CX 300 you would save 2.7 grains per inch for a total of 78.3 grains. If you dropped to a 100 grain tip, you would save another 25 grains. 103 grains is a lot of weight loss from a shaft that would result in a faster arrow with a flatter trajectory. You kinetic energy would still be sufficient for deer and smaller size game. As PABowhntr said, the lighter broadhead would probably help out with arrow flight as it will not affect the arrow spine as much.

PABowhntr, that is an awesome website! Thanks!

Jeez ... as a college student I was already stepping out on a limb to buy carbon. I don't have the cash to buy new arrows this season. I'm a little unhappy with the service at the shop I went to and don't think I'll be back there. Thanks guys for the help!

Don't cry Spitz. You can make what you have work. Just set the bow to around 65 pound draw weight. Get some 125 grain field tips to practice with and get your sights adjusted for the Terminators. You should have a descent arc out to 30 yards. I would not take a shot past 25 yards since you have not had the bow very long and need to practice with it. Put some new carbons and broadheads on your x-mas list and maybe Santa will be nice to you this year. After that, get that bow tuned for the new arrows and practice, practice, practice.

PS - Get some new blades for the Thunderheads too.