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I recently purchased a 70 lbs Realm X. Prior to that I was hunting with PSE Evolve 35, 70 lbs. On the Evolve I was using an MBG Ascent Verdict which I added a 4th pin to (gets me out to 50 yards). With that set I was using a 455 grains arrows shooting 68 pounds at 28.75"of DL. The sight tape I was using was marked 276 fps. Today I went out with the Realm X. Same draw weight, same exact DL of 28.75", but the difference is I up'ed my arrow weight to 505 grains. Started at 20 yards and gang adjusted the head. Moved to 30 and was dead on...ok. Moved to forty, again dead on. Fully expecting to need to drop the 4th pin a little at 50 yards but it was also dead on. I then moved to 60 and dialed the sight with the existing 276 fps tape, dead on. Moved to 70 and shot a great group which if anything was a little high( a little right also, but it was windy). Plugged the numbers in and added 15 grains for a peep and d-loop and came up with a 347-348 IBO. Oh, I forgot to mention I am shooting on comfort. Prior to measuring the draw weight I confirmed the scale with a 60 pound dump bell which was also within a 1/2 pound on our quality bathroom scale. Plus I have been pulling between 67-68 pounds for about 15 years now and nothing feels different. Like I said, strange but good!

Have any of you ever found the MBG sight tapes really off?

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Discussion Starter #2
Have any of you ever found the MBG sight tapes really off? Anyone?

I don't have a chrono and when I do the 20/40 yard arrow drop test it says I should be around 260 fps which makes more sense for my set up.
 

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I shoot a 550 grain arrow. I tried to use the sight tapes but I usually end up using blank tape and marking my own.. if you can mark the blank tape at say 20 and 60 then match it with Marks on the bg tape it will be close.. seems to me at 90 or so they start falling off when done that way..
It may be different for light arrows.. I've never had good luck shooting through a cronograph and using the speed on the tape..
 

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I have both bows. It’s been awhile but I’m pretty sure they were almost identical speeds through my chrono on the same measured specs.

FPS labeled sight tapes are a starting point at best.

Arrow to peep to peep to sight measurements at full draw change everything.

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I have both bows. It’s been awhile but I’m pretty sure they were almost identical speeds through my chrono on the same measured specs.

FPS labeled sight tapes are a starting point at best.

Arrow to peep to peep to sight measurements at full draw change everything.

Sent from my iPhone using Tapatalk
Yep, they are almost identical... but it was me adding 50 grains to the new arrows and having the old sight tape work out, that threw me for a loop and left me scratching my head.
 

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Discussion Starter #6
I shoot a 550 grain arrow. I tried to use the sight tapes but I usually end up using blank tape and marking my own.. if you can mark the blank tape at say 20 and 60 then match it with Marks on the bg tape it will be close.. seems to me at 90 or so they start falling off when done that way..
It may be different for light arrows.. I've never had good luck shooting through a cronograph and using the speed on the tape..
From my driveway to the quonset is exactly 70 yards and I keep that plowed for access. I need to stand in waist high snow to get out to 90 right now. Thanks for the idea and in a couple weeks I will give it a try
 

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So many variables that determine which tape is used.

Using the same hha tetra

Sr6 shoots 280fps - #45 sight tape
Vxr shoots 286 fps - #47 (“slower”) tape


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