Certain ball-type powders (including H110 and Win296) can be hard to ignite, and when they fail to light, you get what you described. To successfully use these powders, you need to watch three things: neck tension/bullet pull, crimp, and primer type.
Neck tension/bullet pull -- size all cases, even new ones, to maximize case mouth tension on the bullet once it is seated. A heavy crimp will NOT replace a tight bullet/case mouth fit; you need both to resist premature bullet movement (caused by the primer pop) until the powder can ignite.
Crimp -- Use a bullet with a cannelure or crimping groove, and crimp the case securely into the groove. If your cases are used/previously fired, check lengths regularly and trim when necessary to prevent inconsistent crimping (too high or too low in relation to the crimp groove).
Primer type -- Use magnum primers whenever possible (but make sure your load data were developed with mag primers; NEVER substitute mag primers into a non-mag-primer load). The longer/hotter flame of mag primers increases ignition reliability of these powders, and usually improves performance in cold-weather conditions, too.