A Ziegler-Natta type catalyst providing for broadening of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst maintaining high activity and excellent fluff morphology. Generally, such catalyst is made by a) contacting a catalyst component with an organoaluminum preactivating agent, wherein the catalyst component is produced by a process comprising, i)contacting a soluble magnesium dialkoxide compound of the general formula Mg(OR'') 2 with a halogenating agent to form a reaction product A, ii) contacting reaction product A with a first halogenating/titanating agent to form reaction product B; and iii) contacting reaction product B with a second halogenating/titanating agent to form a catalyst component. The second halogenating/titanating agent comprises titanium tetrachloride, and step iii) comprises a ratio of titanium tetrachloride to magnesium compound in the range of about 0.1 to about 5. Catalyst components, catalysts, catalyst sytems, polyolefin polymers, and methods of forming each are disclosed.