Yup. I used to enter this, using my (now long gone) Annie 1813 Supermatch.
It was more than capable of 1MOA groups or better using 'selected' batches of Eley Tenex and - in my relative youf and when shooting 3 days a week - did deliver sub 1" groups on 100yd ranges as long as they were not too wind infested. On the accurately described (and now also extinct) very exposed 200yds range at Bisley, 1MOA was a dream; 2MOA was a very good day. I do not recall shooting there in windless conditions.
Biggles