Well, the covert hunter is jus the riser. Their bolt down CH is more efficient than the ilf with Uukha limbs, still, the uukha’s are solid carbon fiber and unaffected by moisture, temperature, etc. and are very efficient.
I ordered the limbs from alternative sporting services in Britain. They’re much less expensive than Lancaster. And Lancaster doesn’t carry the limb I ordered.
All the primitive guys say a 500 grain arrow out of a 45+ pound bow will get you all the energy you need to kill a black bear. 50 lbs and a 600 grain arrow will make accuracy less important, of course.
I read an article describing how KE is really a pretty poor predictor of penetration because it focuses too much on velocity, which is a compound bow thing. The penetrating power of a heavy arrow at 150 fps that generates about 40 ft-lbs of KE was massively higher than a lighter arrow traveling at 230 fps that produced 60 ft-lbs of KE. They tried to use momentum and KE to try to better predict the ability of an arrow to penetrate and did a good job of it. Essentially a heavy arrow going slow trumps a fast arrow if it’s too light. Fast = flat trajectory = easier aiming, especially at distance. I don’t shoot past 20 yards so flat trajectory is pretty irrelevant to me. A heavy arrow is just as heavy at 20 yards as it is at 2 and is the more important and reliable of the trade off between speed and weight for shooting the distances I’ll be loosing from. Therefore, what most compound shooters fixate on, fps and KE, is largely irrelevant as long as it is reasonable.
My bow will be in the range of 47 lbs on the finger and have the equivalent power of about 50 lb standard recurve. When I get some data, I’ll post it up so I can calculate the KE of the bow.