How many grain bullet should I be shooting in my 243 for long range deer hunting?

i agree but also you need to consider how much powder to put in the casing. that will also increase the distance at which the bullet will be accurate you can also sight the gun to hit a specific target with your current grain of bulletHow many grain bullet should I be shooting in my 243 for long range deer hunting?
100 grain is sufficient to kill a deer up to 260 yards away with adequate knock-down power.

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