Twohearted clone 1.058 + 7% ABV?

[Nyakavt]

According to Bell's website this beer is 1.058 OG, 7% ABV. So if I run this through a quick formula:

ABV=(OG-FG)*131, FG = OG-ABV/131, FG = 1.00456

1.00456, good for about 92% apparent attenuation. Every clone recipe I've seen is mostly 2-row, some crystal, and in some cases vienna/munich and carapils/dextrine. They must use simple sugar (or other low residual carbohydrate adjunct, rice?) to achieve such a high attenuation but I don't see that represented in the clone recipes. Do you guys think the website information is wrong?

Now if the apparent FG is 1.00456, then the real FG is about 1.0139 (using formulas from website below). I'm assuming all of this residual extract is from the grain, not the sugar. If we assume 70% real attenuation (just a guess, anlalogous to 85% AA) from the yeast, then the grain OG would need to be:

(x-13.9)/x=.3, 0.3x=13.9, x = 46.3 gravity points. That means the remaining 11.7 points should come from sugar, or about 1.25 lbs in 5 gallons. This works out to about 13% sugar by mass if the mash efficiency is around 80%. Does this seem reasonable?

formula source: http://www.realbeer.com/spencer/attenuation.html

[mikefromcu]

This beer was included in the Sept 05 IPA clone issue of BYO.
76.7% 2 row
16.4 Vienna
4.1 C10
2.7 CaraPils
OG 1058

All Centennial, equal amounts at 60,45,30,15,0 and Dry Hop
3 days DH, WLP 051 ferment at 70*
OG 1.058 FG 1.012 IBU 56 SRM 8 ABV 5.9%
Mash at 15__ crap, my last digit got cut off, I'll have to go back and look that up.

Let me know how it turns out!

[Big Tex]

I actually brought this up with Bells and they said that that 1.058 was an error on the website. It should be 1.064... Should be corrected soon.

[mikefromcu]

That makes a lot more sense - should finish around 1.011 then.

That pretty dry, no? perhaps the mash was at 150 then.

[Nyakavt]

I actually brought this up with Bells and they said that that 1.058 was an error on the website. It should be 1.064... Should be corrected soon.

Well there you have it, thanks for clearing this up! As you can tell, it's been a source of confusion for me.