found it

https://iga.in.gov/legislative/2016/bills/house/1231#document-08d343ce

) This section applies to a hunting
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season beginning after June 30, 2016, and ending before January
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1, 2020.
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(b) A hunter may use a rifle during the firearms season to hunt
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deer subject to the following:
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(1) The use of a rifle is permitted only on privately owned
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land.
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(2) The rifle must have a barrel length of at least sixteen (16)
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inches.
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(3) The rifle must be chambered for one (1) of the following
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cartridges:
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(A) .243.
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(B) .30-30.
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(C) .300.
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(D) .30-06.
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(E) .308.
CC123103/DI 92 2016
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(4) A hunter may not possess more than ten (10) cartridges for
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the rifle while hunting deer under this section.
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(5) The rifle must meet any other requirements established by
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the department.
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(c) The use of a full metal jacketed bullet to hunt deer is
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unlawful.
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(d) The department shall report on the impact of the use of rifles
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to hunt deer under this section to the governor and, in an electronic
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format under IC 5-14-6, the general assembly before February 15,
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2020.
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(e) This section expires June 30, 2020.