▁range ▁and ▁accuracy . ▁▁ ▁The ▁Th ou ven in ▁rif le ▁bar rel ▁had ▁a ▁forcing ▁plug ▁in ▁the ▁b ree ch ▁of ▁the ▁bar rel ▁to ▁m old ▁the ▁bullet ▁into ▁the ▁rif ling ▁with ▁the ▁use ▁of ▁a ▁special ▁ram rod . ▁While ▁successful ▁in ▁increasing ▁accuracy ▁it ▁was ▁extremely ▁hard ▁to ▁clean . ▁These ▁improvements ▁were ▁the ▁basis ▁for ▁the ▁development ▁of ▁the ▁M ini é ▁Ball . ▁ ▁Among ▁the ▁first ▁pointed ▁or ▁" con ical " ▁bul lets ▁were ▁those ▁designed ▁by ▁Captain ▁John ▁N orton ▁of ▁the ▁British ▁Army ▁in ▁ 1 8 3 2 . ▁N orton ' s ▁bullet ▁had ▁a ▁h ollow ▁base ▁made ▁of ▁lot us ▁p ith ▁that , ▁on ▁firing , ▁expanded ▁under ▁pressure ▁to ▁eng age ▁with ▁a ▁bar rel ' s ▁rif ling . ▁The ▁British ▁Board ▁of ▁Or dn ance ▁rejected ▁it ▁because ▁spher ical ▁bul lets ▁had ▁been ▁in ▁use ▁for ▁the ▁previous ▁ 3 0 0 ▁years . ▁ ▁Ren owned ▁English ▁gun sm ith ▁William ▁Gre ener ▁invent ed ▁the ▁Gre ener ▁bullet ▁in ▁ 1 8 3 6 . ▁Gre ener ▁fitted ▁the ▁h ollow ▁base ▁of ▁an ▁o val ▁bullet ▁with ▁a ▁wooden ▁plug ▁that ▁more ▁reli ably ▁forced ▁the ▁base ▁of ▁the ▁bullet ▁to ▁expand ▁and ▁catch ▁the ▁rif ling . ▁Test s ▁proved ▁that ▁Gre ener ' s ▁bullet ▁was ▁extremely ▁effective , ▁but ▁the ▁military ▁rejected ▁it ▁too ▁because , ▁being ▁two ▁parts , ▁they ▁jud ged ▁it ▁as