ID GO THAT ROUTE BEFOR WELDING ON A BOLT.The M76 bolt and bolt carrier can be bought for $150. I'm sure there are PSL owners that would buy the spare 7.62x54R bolt
THERE ARE A LOT OF WAYS TO LEGENTEN A BOLT YOU CAN ADD AN EXTENSION TO A SMALL STEM BOLT THAT SLIDES OVER THE EXISTING STEM AND THEN MAKE THE OFD FIT A LSRGE STEM CARRIER THEN WHILE YOU ARE AT IT ADD A SPPRING LOADED FIRING PIN AS IF YOUR GOING TO SHOOT TRUE 308 THEN YOU SHOULD HAVE ONE AN IF YOUR GOING TO HAND LOADF ITS GOOD IDEA AS WELL SO YOU CAN USE STANDARD PRIMERS. SLAM FIRES SUCK ON SOFT PRIMERS. AN YES IT DOES HAPPEN i KNOW FOR A FACT.
read the 308 conversion page a lot applies to a psl as it appears the trunion is vry close to a m70 or rpk. there is all kinds of discussion but when its all over there is no real answer as to what is the safe limt of an AK or PSL bolt an trunion.
I can tell you I have loaded 7.62x39 in these guns untill the primers were piercing an the brass was flowing into the extractor port. likley around 65,000 PSI or even more. a 22-250 rounds is at 65,000 psi an it will not pierceprimers or have brass flowing into the extractor groove. so its possable I have hit 70,000 PSI. no way to know but Im sure it was well over 60,000 PSI. there are tons of variable . the 308 galil uses a two lug bolt an it looks identical to a standard x39 bolt except the bolt face is opend up.
untill some ones poneys up the cash an takes a few variants an has them profesional proff tested to a point of distruction w will never know an it wpould have to be dome with multipul guns to prove that there is a average pressure were failure or at least head space begins to change. we will not have any facts on the matter.
I have conversions an i have shot factrory ammo in 243 an 308 but it really proves nothing. i load in the middle of the range.
Imo trusting military surplus ammo that was made 60 years ago by god knows who and how an to what specs is a bad idea .
Read this thread from start to finish i started it in 2005 its likely the most involved conversation about the matter inthe world. there are some pretty smart guy in there an ton of info. good discussions on PSI vs CUP SAMMI SPECS VS CIP ETC.
IMO its a must read if your going to do a conversion of any calibur with a bigger bolt face an higher pressures.
haven,t handled one but... what did the israelis use for the bolt in their .308 galil. i would trust them to have tested thoroghly before sending out to troops... just a thought and question
from the pictures Ive seen it looks just like a 7.62x39 bolt but with a bigger bolt face.haven,t handled one but... what did the israelis use for the bolt in their .308 galil. i would trust them to have tested thoroghly before sending out to troops... just a thought and question
I had read stories of the Galil falling ocasionaly but I cant find them any more.
considering the AR 15/m16 has bolts fail all the time id feel safer shooting the Galil .
there are very few documented reports of any ak style bolt failing.
if some one wants to send me a bolt an trunion. Ill load a 308 or 243 build to the max an do some imporvised proof testing.
The Galil may use better steel than what they're using in Russia. The Galil was designed before there were mandatory CIP overpressure proof testing required in Europe. The Russians tried to make a two lug 308 AK but they wouldn't pass the 125 percent pressure testing. They went to the three lug bolt. The bolt head and right bolt lug of the Yugoslavian 308 M77 AK and 8 mm M76 are larger than a standard AK bolt. The 308 Valmet bolt is also larger in the same way. In a stamped receiver I would stay with an RPK type trunnion and use a 308 Galil bolt or if using a PSL, use an M76 bolt.
If you wanted to use the AK74/AK100 bolt you would have to lengthen the stem, replace the firing pin with one of proper dimensions, open up the bolt face to the proper dimensions, modify the extractor, rework the extractor cut out on the bolt stem, sleeve your PSL bolt carrier for the small stem bolt. The Saiga 7.62x39 bolt would require less material removed from the bolt pocket and the extractor. Kvar has them at the moment.
Im still waiting on the barrel and the receiver. As soon as that stuff gets here Im ready to get this thing moving.