I did extensive research over 2 months or so, read everything I could get my hands on to learn about him and his guns.
Wiard would do stuff like put ads in the New York Times for the public to read, with reviews of his guns that he solicited from the Artillery Officers, he would make it sound like he was making a big contribution to the war effort. Would make lots of claims before the guns actually did what he said they were going to do. When he would be permitted to speak in front of congress, he would also bring testimony, and it's congressional testimony, so you can find in in Google Books and read it word for word, but it doesn't come across like a scientifically sound test, it's like a sales pitch. He couldn't help himself it seems, he just was always selling his product, and it makes his credibility look bad....
He wrote this pamphlet to turn public opinion in his favor:
Here is one of his days testifying in front of congress, although I originally picked this one because he was trying to get paid for the guns he delivered, and was angry about how the guns had been proofed, not using a standard test....
So, since he aimed his efforts at selling, I have some reservations about the claims that he promotes about his guns. I don't know if he's edited or embellished the claims, the claims are all submitted by Wiard, so it's practically second hand....