I received mine on Thursday. I just spent the morning setting it up. Initial setup and shots were awesome. You could immediately tell how stable this bow it. I know it will be a shooter. The grip feels great. It aims perfect. Balance is awesome.
Here are my performance results initially and after proper tuning.
Bow arrived with the checklist tag attached.
I checked the timing. The top cam was maxing out ahead of the bottom cam. That required me to add two twists. I checked it again. Now it was perfect.
Draw Length stated 29" on the tag. The bow measured 29" as indicated.
Draw Weight (45-60lbs) indicated 62.2 on the tag. Actually measured 56.6 bottomed out.
ATA should be 40". Measured 40 1/4"
Brace height should be 7". Measured 6 7/8".
So, to reduce the ATA and add the brace and add the pounds, I added 10 twits to each cable.
Draw Weight: 59.6
That is as much draw weight as I am going to get. Not really happy about that.
I took my same CXL 250 shaft that I ran on my Shadowcat last year.
Here is my setup. Just a warning. IBO speeds well below advertised.
Draw Weight: 59.6lbs
Draw Length: 29"
Brace Height: 7"
CXL 250 w/90 point total weight of 344grains
I entered all of the parameters into AA and it stated the IBO of 310fps.
Martin advertises 325-335.
My Shadowcat last year with the same arrow had an IBO rating of 312fps
Shadowcat setup from last year
ATA 41 1/2"
Brace Height: 7 3/4"
Draw Length: 29"
Draw Weight: 62lbs.
My setup had and IBO of 312 when they advertised 320-325
The Nitro 1.5 cams on my Scepter V are identical in shape and curves as the ones on my Shadowcat. You would think with 3/4" shorter brace height the Scepter should be faster as advertised. My Scepter V is shooting 2fps slower than my shadowcat but the draw weight is 3lbs lighter. If I could get it to go to 62lbs then I could have an apples to apples comparison. If I add a couple of feet for each pound, then 3 pounds should make my Scepter V be shooting 316fps to my Shadowcat's 312fps. That puts my IBO about 10fps less than Martin's minimum advertised (325). My Shadowcat was 8fps under their minimum advertised (320). All in all, I would say that is about right on track in my book. I usually take Martin's minimum advertised speed and subtract 5fps and that is usually what I end up with on their bows. The Shadowcat and now the Scepter V are the only two I have ever had to come in 10 under.
This is only one bow and one setup. Others of you may have different experiences. If so, good for you. This has been my experience with Martins and I have been shooting them for 24 years. I have been a staff shooter for 6 years. I really like the bow and it will be a really great shooting bow, especially indoors where speed is not an issue. If you are all about the speeds and getting their advertised specs then good luck. This is my only disappointment with the bow. The speeds are there for me for 3D, but again, I cannot get it to do the minimized IBO.