I'm not an editor and dont really know how this works..
..But there's a statement in this article that makes little sense:

"The resulting cartridge would have the accuracy of the former for typical combat ranges, and the firepower of the latter at short ranges."

This literally translates to,  "has the accuracy of a rifle and the firepower of a pistol at short ranges."
This is (i assume) not the intention of the sentence,  because it's not true and it doesn't make sense...  
Because a rifle round does not 'lose its power' and become a pistol round at short ranges...

...I assume its supposed to read:

"The resulting cartridge would have the accuracy AND FIREPOWER of the former for typical combat ranges, and the increase of controllability (ease of use) of the latter at short ranges."