The 6 . 8 mm case is based on the old . 30 remington hunting round of 10 . 6 mm rather than 9 . 5 mm diameter , which reduces magazine capacity ; a magazine similar in size to the standard 30 - round 5 . 56 mm one will take about 28 rounds of 6 . 8 mm 6 . 8毫米弹壳源自老式. 30英寸雷明顿直径10 . 6毫米而不是9 . 5毫米的猎枪弹，这样一来减少了弹匣容量；一个与标准30发5 . 56毫米弹尺寸相似的弹匣可以装入28发6 . 8毫米弹。
The 6 . 8 mm remington spc is limited to relatively short bullets to fit within the maximum cartridge length of 5 . 56 mm weapons , so the grendel has a shorter ( 39 mm ) and fatter case , leaving room for longer , low - drag bullets , which retain their velocity out to long ranges 8毫米的雷明顿spc缺少相配套的短弹头使之合适于5 . 56毫米武器的最大弹药筒尺寸，因此格伦德尔的弹壳更短（ 39毫米）更胖一点，为远距离低阻弹头留出空间。
At about 3 . 30 pm , officers of the regional crime unit and the regional intelligence unit of kowloon west gained entry into a unit in wo ping house , lei cheng uk estate and seized one stun gun , two iron rods , one beef knife , four air pistols and some equipment for manufacturing of imitation bombs including some wires , batteries , plastic tapes , one bullet shell , one test tube containing some brown powder and three small plastic bags of brown powder 下午约三时三十分，西九龙总区重案组及情报组探员进入李郑屋?和平楼一个单位调查，在单位内检获一把电枪、两支铁通、一把牛肉刀、四把气枪及一些怀疑可用作制造仿制炸弹的材料，包括电线、电芯、胶纸、一个空弹壳、一个盛有啡色粉末的试管及三小包啡色粉末。
