SVT, you mean for a Mosin-Nagant m-91-30?? The ww1 Russian rifle? It would be closer to a Tokarev/Dragunov mag (7.62x53.5R or 7.62x54R). I have one i personally converted using a Tula Arsenal piece... almost scr@#ed up and converted my New England/Westinghouse in 7.62x53.5R. Would have been a very expensive mistake as they are kind of rare down south in North Carolina... moreso up North. I've only seen 20 in my 45 yrs of collecting (i'm 50 now... dad started me with a Tokarev semi-auto rifle when I was 5 ). Anyone else with an idea? Remember, the Swedish government converted some to sniper roles for WW2 I think.