Here are two different opinions/studies on your 0.7% point:
In 2000, the Bureau of Alcohol, Tobacco and Firearms (ATF) published the "Following the Gun" report.[18] The ATF analyzed more than 1,530 trafficking investigations over a two-and-a-half-year period and found gun shows to be the second leading source of illegally diverted guns in the nation. "Straw purchasing was the most common channel in trafficking investigations."[19] These investigations involved a total of 84,128 firearms that had been diverted from legal to illegal commerce. All told, the report identified more than 26,000 firearms that had been illegally trafficked through gun shows in 212 separate investigations. The report stated that: "A prior review of ATF gun show investigations shows that prohibited persons, such as convicted felons and juveniles, do personally buy firearms at gun shows and gun shows are sources of firearms that are trafficked to such prohibited persons. The gun show review found that firearms were diverted at and through gun shows by straw purchasers, unregulated private sellers, and licensed dealers. Felons were associated with selling or purchasing firearms in 46 percent of the gun show investigations. Firearms that were illegally diverted at or through gun shows were recovered in subsequent crimes, including homicide and robbery, in more than a third of the gun show investigations."
In contrast, a Bureau of Justice Statistics (BJS) report on âFirearms Use by Offendersâ found that only 0.8% of prison inmates reported acquiring firearms used in their crimes "At a gun show," with repeat offenders less likely than first-time offenders to report acquiring firearms from a retail source, gun show or flea market. This 2001 study examined data from a 1997 Department of Justice survey of more than 18,000 federal and state prison inmates in 1,409 State prisons and 127 Federal prisons.[20][21] The remaining 99.2% of inmates reported obtaining firearms from other sources, including "From a friend/family member" (36.8%), "Off the street/from a drug dealer" (20.9%), "From a fence/black market source" (9.6%), "From a pawnshop," "From a flea market," "From the victim," or "In a burglary." 9% of inmates replied "Don't Know/Other" to the question of where they acquired a firearm and 4.4% refused to answer.[21] The Department of Justice did not attempt to verify the firearms reported in the survey or trace them to determine their chain of possession from original retail sale to the time they were transferred to the inmates surveyed (in cases where inmates were not the original retail purchaser).[22]
Your example is just a study not a hard core fact.
