Interesting! At least the gas port remains well to the front unlike those .303 conversions done here in Canadaicon. The SVT action is not exactly delicate and the Soviets added meat to the receiver sidewalls with progressive changes through to mid '43. My references suggest this was mainly to reduce stretch of the body which contributed to case head separations in the earliest versions. But the bolt is pretty massive and the locking lug is large and bears on a hardened insert that is pressed into the receiver. I suspect the main problem with sporterized versions would be getting the timing of the gas system spot on. Even with the regular rifle and surplus light ball I've often had the feeling that the bolt is opening with some significant remaining chamber pressure- lots of fouling blown back into the bolt/carrier, magazine, etc.

Ridolpho