Hey guys I shoot a heli-m 28" pull at 70#s and im thinking about switching to a lighter arrow. Currently im shooting the maxima blue streak 350s. I know that the "chart" says you should shoot anything less than a 350 grain arrow, but I was wondering what is the lightest you guys would go with at 27 in arrow with 70#s?
I think you should stay where you are. I have short arms and also shot 70 plus like you do. i have tried the lighter CX arrows back when the had 200 and 300's instead of the 250 and 350's and the 200 was faster for sure, but you could see the arrow acting squirrely in flight. If you are on the edge of spine requirements; it’s better to err on the side of caution. I have a 2.5” to 3” drop using a single pin at 30 yrds with a Hoyt Alphamax.
Just curious why you want a lighter arrow? There's been a lot of talk lately on the forums and the general consensus is that a heavier arrow - while slower will provide better penetration than a lighter arrow. Also, when you say "maxima blue streak 350s" and "350 grain arrow" - I think you're confusing a spine measurement with gpi (grain per inch). At 70lbs, you need a rather stiff arrow and generally a stiffer arrow is heavier. Also, if I was deciding between two arrows - one lighter and one heavier, I'd go with the heavier arrow. You can't just consider arrow weight. Head weight, arrow spine, arrow weight, draw length, draw weight are all very important factors that all affect arrow flight and performance.
I am currently shooting 305 fps with the 350s if i go to the 250s I will gain roughly 15 fps and almost 10ft/lbs of KE. Where I hunt I will rarely get an open shot outside of 30 yards. I am aware that a heavier arrow will be slower but hold more KE at longer distances. I was under the impression that within 30 yards the lighter arrow will get better penetration.
Absolutely correct. Logan, give this a read: http://archeryreport.com/2011/01/heavy-vs-light-arrows-speed-power/
An arrow can only gain so much speed and KE and when you reach that threshold or fine line, it is better to air on the side of caution. OR
Slider46 thanks for the article it really helped me out I like to see numbers and have things explained and not just accept something just because someone post it on here. So after going to my local bow shop having a 250 cut and chronoed I figured out I can shoot an arrow that is 26.5 inches long with a mechanical broad head so here are the numbers I know for sure. Maxima 350- 27.5in 368 grains @305fps = 76.03 KE Maxima 250- 26.5in 329 grains @319fps = 74.38 KE Now with a little math I figured out two more arrows one being the easton axis which has a smaller diameter which will give me less drag through the air and through the deer. Maxima 350- 26.5in 355 grains @310fps = 75.9 KE Axis 400 - 26.5in 375 grains @302.5fps = 76.32 KE With all that being said im now leaning towards the axis if I can actually get 302fps on the chrono ill have good KE and speed and it will hold that in flight being a smaller diameter than the maxima 350. Please correct me if I am wrong and do you think the Axis would be a better arrow than the maxima 350 at 26.5 ins?
