After 20 years of running accuracy matches for as issued military rifles each weekend with about 300 different shooters and every military rifle , I did not see the K-31 as the most accurate rifle ever . They shot well but never dominated the matches . None of our match records were held by a K-31 , 100 yard bench group size , top score , 200 yard , rapid fire , sniper , to name some . There are a few reasons people feel the K-31 is so accurate . First GP-11 ammo is very good ammo and most other rifle types do not have loaded ammo of this grade to use and need good reloads to shoot well and most people can not reload accurate ammo for military rifles . Also K-31's were all checked for wear and rebarreled if needed before storage and are in excellent condition , that can not be said for most other type rifles . And last most people do not shoot old iron sighted military rifles well enough to see a major difference . The only time we had to separate a rifle type was it just was not accurate enough to compete with the others and enough people had that type and wanted to shot them . Two types that come to mind were the Enfield's [ nobody ever got one to be competitive in a pure accuracy match ] and the Type 99 [ the large dia peep sight just did not allow for benchrest accuracy ] . Both did do well in speed or combat type matches . It took a pair of sub 1 inch 5 shot groups at 100 yards shot on demand to win most of our matches and we had many shooters that could do that with about any type of military rifle . That is 5 on demand , no do overs , not the best five of 8 , not the best ever shot once . Also we were shooting for score , so the group had to be in the X ring to win the match .