I just looked at the 308 Valmet bolt and the bolt lugs are both longer, front to back, and wrap farther around the bolt similar to the PSL bolt. The 308 Yugo bolt doesn't look much bigger in the bolt lugs but the bolt face is extended forward to help feed the longer cartridge. The 8x57mm M76 bolt may have slightly longer bolt lugs but not by much. They may be similar to the PSL bolt though. I haven't compared them side by side. I don't remember exactly how the 308 Galil bolt looks. It is a bit different but I think thr bolt length is slightly different. Remember that the Russian did try a two lug bolt similar to the AK74 bolt in the 308 Saiga and the two lug bolt design FAILED CIP proof testing. That is why the 308 Saiga uses three bolt lugs. I bought a long barrel 308 Saiga as I didn't like the weird taper under the front sight base on the short barrel model. I removed the barrel. Stripped the barrel blocks and turned the barrel down to AK74 diameters and length, except under the handguards I left it thick. It's light weight and has a bit of recoil. I fitted the AK74 barrel blocks on it.