I says stops 520 fps. I used a 370 fps cross bow which it was purchased for. Struck dead center of the bag, a 20" bolt went in more than half way. It was a firm pull to remove. Not dead center of the bag, using the little squares a 20" bolt went in up to the Fletching and was a challenge to remove but possible (not the edge of the bag, those smaller targets, so like 10-12"? from the limit of the bag, edge. The cloth retained the hole separation once pulled. Then I used a compound bow, set to 50lb pull and it was a fine target for that, the weight of the bag kept it from walking. Those arrows went in from 12" to maybe 14" and a firm pull to remove. So, from this and as a brand new bag I'd be very concerned to use a 520fps weapon. It may stop it, but my other target, a typical foam sheet, compressed between plywood with this kind of cloth, otherwise same size "stopped" this 370fps (it may be 375fps per chrono of it on YT video) 20" bolt but the fletching was accordianed (not ripped from the shaft but really munged). So, stopping and having a bolt/arrow one can pull, undamaged is something to consider. I was at 25 yards and of course much closer than 20 yards, unless the hit was dead center with the 370fps would me eventually damaged bolts. So, with all new gear in this, bolts, crossbow and target (all came as-is typical equipment without spec'g all) and being at 30 yards, maybe 40 yards (I don't have that space readily - 30 is my limit, readily) then assuming distance may lessen the arrow depth (?) that's how this will work for me. Using new equipment, primarily the Crossbow, and used to years of practicing gradual distance that matches progressive competence this target makes me a bit uncomfortable. I expected to be able to practice at 20 yards, 25 max as readily available room. What would be great for target manufacturers would be to rate a typical bolt, e.g. 20" with typical target tips and advise a depth the friction of the fill may stop a bolt at with FPS and Distance. So, like - above my as OEM shipped bolts with my 370 crossbow will sink and publish that data and "warn", advise it rated only for the center of the target. That center only means if I practice like I did with my Bow at 100 arrows per day, this target won't last long. I was able to somewhat "renew" my other target using expanding foam to fill the major holes and got it to last two seasons, years actually and remains usable. I will try to renew it one more time for the Bows. So, I hope that helps someone. Again, I think *upfront* OEM's need to advise a usual/typical expectation with typical gear, specify how many grans in total bolt/arrow weight, diameter of bolt/arrow, target tip, etc. I think what I am paying for is to not only *not* shoot through the target but have the bolt/arrow stopped by 1/2 to 3/4 max it's length or advise regardless of arrow length if at this distance, fps, diameter, weight, target tip it will embed 10, 12, 14 inches. I may experiment when the weather is hotter, mid-summer, to wet the side of the bag I am using hoping that the water may add friction ? to the material and I may get closer more comfortably. There's not way to adjust the weight of pull like on some Bows 30lb to 75lb pending draw length. With a crossbow - or mine, that 370fps 165lb pull is fixed. Again, I hope that helps someone. So, bottom-line, this target for the price I would not avoid it pending other data from users offering more than "stops mine fine" - not sure what that means and how that relates to an as shipped 370 with two OEM bolts at 25 yards. I had this, FYI - zero'd in, after bore/arrow citing by the 6th bolt with the non-magnified dot scope - I would have started to break bolts trying to share the same hole. I'm not "new", just new to this and why so specific about expectations for safe functional lasting use.
