Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Can you use 20" bolts with the 400?
Document: The multi reticle scope is pretty accurate right out of the box too. I fired my first 3 or 4 bolts at about 20 yards and was hitting in about 6 inch groupings, that was without adjusting the scope at all so I was pretty happy with it. I haven't really had time yet to sight it in past 40 yards, but this weekend I would imagine that will come.
so use it wisely. This crossbow is a real weapon and very powerful.Once it arrived, I was able to put it together very easily and was up and running in about 20-30min. I've shot it plently of times since and once I zeroed in the scope, I've found it to be a very accurate bow.
The two deer I shot with the 150lb, 215 or so FPS recurve didn't ten yards before they crumpled, I can envision the Quad 400 dropping the deer even quicker. I will most likely edit this when I bag a deer.I did buy the crank cocking device for this bow. I don't like it much and will keep it off and to the side and use a rope cocking device instead.
I just bought the Barnett Quad 400 after doing quite a bit of research on different crossbows. I am convinced I made the right choice with the Quad 400. Let's start with the installation: I will be the first one to admit, I lack mechanical know-how and putting things together is not my strong suit. That being said, I know how to use an allen wrench and that's really all you need to be able to use to put this together.
Also this was a fresh production bow. The other issue was that the fletching on the bolts were messed up from shipping and Barnett promply replaced them. Unlike some folks who have experanced issues with their customer service, I did not have any issues at all. In fact I found them to be very professional and responsive. All in all I would purchase this bow again.
The quiver that comes with this system is nice but when using the crossbow I take mine off cause it just feels like it's getting in the way even though it really doesn't (just feels too cumbersome to me to have it on). It's nice that you can carry three bolts on the bow itself but I ended up getting a belt strap quiver from my local archery shop that holds much more than that.
Love this crossbow. The reason for  only 4 stars is the fact that I'm 5'8&#34; and cant get my short arms low enought to set the bow string. A pulley system is a must. VERY!!! powerfull not a toy. Will go through 20 inches of flat cardboard and plywood. Easy to put together also. Highly recommend.........
The two deer I shot with that one, the aluminum bolts passed right through, and buried themselves. I couldn't find them after half an hour so I just gave up as they are on private woodland, away from any crop fields, pets, etc... With the new x-bow and the expensive carbon bolts with the broadheads I hope to find the bolt. I'm leaning towards the luminock's.
I bought this for my husband with little (okay- no knowledge) of Crossbows. Like a good wife i researched everything and even threw out a few fun words like &#34;quiver&#34;, &#34;bolts&#34; and &#34;grains&#34;, when discussing the bow. My husband LOVES it, it is ridiculously accurate to over 70ft. I'm thrilled with the purchase and hubby now believes i have knowledge of these things now.
This is great! Deer in freezer. Lost 8 bolts during sighting in and horsing around. You miss, you lose - forever. I guess I will find them when I cut hay. Did buy the crank as my one attempt at cocking by hand ended up pulling the string of the cam and my hand hitting the scope mount -- hard! Pulling 150# and having it come loose is no joke. This is my first compound and that taught me that a straight pull to cock is very necessary.
Answer: yes