In some embodiments, an archery bow comprises a riser, a first limb supported by the riser and a second limb supported by the riser. A first rotatable member is supported by the first limb and arranged to rotate on a first axis and a second rotatable member is supported by the second limb and arranged to rotate on a second axis. The first rotatable member comprises a first bowstring track comprising a first portion and a second portion, the first portion having a constant radius and a center located on the first axis, the second portion having a varying radius. A bowstring comprises a first end attached to the first rotatable member and a second end attached to the second rotatable member.