It's a myth.
As nearly as I can determine there is no film titled "Bowling in Columbine". There is, however, a Michael Moore film titled "Bowling for Columbine" where he portrays his views on the reasons for the Columbine shootings.
Bowling for Columbine was released on 10/11/2002.
The duration of Bowling for Columbine is 1.98 hours.
Bowling for Columbine was created on 2002-10-11.
Bowling for Columbine was released on 10/11/2002.
Bowling for Columbine grossed $58,576,018 worldwide.
Bowling for Columbine grossed $21,576,018 in the domestic market.
The Production Budget for Bowling for Columbine was $3,000,000.
Documentary
Michael Schmidt - bowling - was born in 1980.
The Great Planet has Bowling for Columbine online. Youtube is another website which is always a good place to look for any viewing to load and see for free.
Terry Nichols' sentence was life in prison