Question: what does the hmr stand for in .17hmr
[{'answer': 'Hornady Magnum Rimfire', 'provenance': [{'wikipedia_id': '2284188', 'title': '.17 HMR', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2284188', 'title': '.17 HMR', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 331, 'bleu_score': 0.6641777685461651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8209425144552814366}, 'section': 'Section::::Abstract.'}]}]