This may be obvious, but:
1. You’ll need to increase the maximum ISO and/or minimum shutter speed. Make sure it’s at least 1/500.
2. Use burst mode (hint #3 above) so that you take many shots quickly, rather than just one at a time.
3. What’s the maximum aperture on your 70-300 lens? you’d want as small an f-stop as possible, since smaller f-stop means larger aperture.
For these, I used a Canon 70-300 lens. Nice lens and not over-expensive!
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