I had a wood snare like that. The shell was round and the edges were flat, but what I finally realized was that the the top and bottom edges were not parallel. One side of the drum was about 3/16" shorter than the other side. It had no re-rings, so it was not really noticeable by looking at it. I could tune that thing all day and it would still sound like crap. Sold it. This was back in the 80's before the internet. I didn't know places could fix these things easily. Nowadays, I'd send it off to Precision drum.So I've got this Snare. It was custom made for me many years ago by a company I was endorsing at the time.
14" x 7" Maple with a White Marien Pearl wrap. I wanted something that "looked" vintage, but wasn't. Kind of a tip of the cap to Gene Krupa.
Anyway, No matter what I do, this thing just doesn't sound good. I've tried changing heads, different thickness, different snare wires. Everything. No mater what I do, or how I tune it, it just doesn't sound right. Only thing I haven't tried is having the edges re-cut. That's a last resort. Anyone got suggestions on tricks I may have not tried?