Since you're relying on secondhand info to state your opinions, here's something I've seen on live TV from the NRA chair. The reason the NRA opposes FUNDING for gun-related studies is, the studies usually have (1) bad data, (2) bad conclusions, and (3) are focused to support gun control.
The NRA believes if the government is going to appropriate our taxes for studies, they should not be used to push a political agenda. Many members of Congress and some administrations have openly admitted there should be fewer, or zero, guns in the hands of the public. There is no evidence that fewer guns in the hands of law abiding people reduces crime, so they are already starting from a standpoint of a political agenda using a patently unproven premise.
The government benefits from a reduction in numbers and types of firearms the public can own, where we can have them, and how many each can have. Therefore, the government should not be spending our taxes to produce reports supporting their position. Bias is "baked into" everything they touch based on their agenda.
There is no centralized database of gun-related violence or injuries and deaths. Often, the categories don't capture the "flavor" of an injury or death, just the pigeonhole it most closely matches. So many examples of how the news blasts a shooting all over the media, then we find out the fact it was justified was completely omitted.
Not all gun deaths are equal. Nor are all gun injuries. We can't create good stats from bad data. We have to fix the data collection PROCESS first.
One good example: Most defensive gun use (DGU) end in no injuries, no deaths and no shots fired. When confronting a gun wielding "victim," attackers often change their mind. Since the crime and the gun use never really happened, there are often no police reports. How do you track something when there is no report? CDC said in 2013 the number of DGUs is AT LEAST as high as criminal use of guns. That means, mathematically, the worst case says as many people prevent injury or death as victims experience injury or death involving guns. Some studies put the number of DGUs at 1.4M - 3M annually, which greatly exceeds the 60K reported uses of guns in crimes.
So, if you're going to plan your life around statistical probabilities, MAYBE you should make sure the data and conclusions you choose can be trusted first.