Makes me want to run mine too, never would expect a 348 out of it, awesome to see the efficiency sky rocket after 575ishHenro been awhile since I ran my mr5. I know my light arrows put me around that 353 mark. But I hit my 360 mark not far above 500 gn. I need to go retest myself.
Lol damn I'll say! Comparing your numbers if you add 25fps for 29" draw and say 2fps for 7gr more that would be roughly 245fps with my 746gr arrow. 9fps difference from mine at 236fps which would be about what I lost compared to my light arrow numbers in 2012. Wonder if the string stretching has something to do with it because the bow has been brought back into spec.Henro. Yours is running a little slow
Yes for that program you have to enter the IBO to calculate the speed so you have to enter a higher IBO to match the actual speed.Quick question, why are you guys putting IBO numbers as high as 383 and 390 into your calculator? Is that to compensate for the efficiency gain you see with heavy arrows?