The dumb clucks at New Haven messed up this top M70 receiver, a 1995 production receiver.
This receiver was new in 2000.
The top receiver, see the material missing from the right rail? That little bit of metal scalloped away will cause a round on the left of the magazine box to nose dive into the extractor groove. Turns out having material there is critical in feed timing. For a round on the left, the cartridge front moves to the right, the bullet should tap the rail and straighten out. Instead the bullet wanders a bit more to the right, and then, the cartridge does not straighten out in time for the bullet to clear the extractor groove. That creates a jam. Seating the bullet deeper somewhat improves feed reliability, but all in all, it is a kludge.
The bottom receiver, the rail is straight. This rifle feeds without jamming.
Again, with arrows
I spent almost $1000 on making a target rifle out of a NIB 1995 production stainless M70 and the thing would not feed correctly. I called up New Haven customer service and after I told them about the receiver face truing, lug truing, bolt face truing, clip slotting, they just laughed at me.
They thought it was funny, because, all that work voided the warranty. And yet, the defect that made this receiver unreliable in feed was their fault.
Winchester New Haven did fold, I hope those chuckle heads had a back slapping good time in the unemployment line.
This PBR was one of the last M70’s actually assembled at New Haven. This is after the FN takeover and in between the move
The thing uses a detachable magazine, so that could be a reason why feed is reliable. The top round is in line with the chamber, but, the whole arrangement turns a five round magazine into a four round box magazine.
I bought extra PBR receivers, I like the original Winchester trigger, not as a target trigger, you can't get the things below 2 1/2 pounds with out running the risk of a bolt over ride of the sear, but I like the original pre 64 trigger because it is harder to gum up or freeze up.
I don't remember the classic receivers having the extended bolt shroud.
This is an improvement over the pre 64 M70. A pre 64 will vent gas straight down the left receiver rail into your eye. The Gun Club President has a pre 64 target rifle built by the WW2 veteran, famous gunsmith author, Roy Dunlop. Roy installed a gas block shroud on the action.
Gas blocking has gone through phases. The M1896 Mauser, awful, the M98 great. The M1903 very, very bad, the M1917 very, very bad,
And the pre 64 bad. The Remington M700, real good. No matter what action you are behind, don’t forget your shooting glasses!!
I can tell you, Classic M70 bolts are a close fit to a PBR bolt, maybe with a bit of tinkering a later bolt will fit, but I recommend, don't lose the original if you can. The firing pin mechanism of a PBR will not screw into a Classic bolt, so, don't lose that either.
This is a M70 Classic, I loved the lines and the cartridge. I bedded the action and free floated the barrel.
It shoots 140 SMK's like a house a fire (a Bench rest National Champ pissed all over these targets on another forum, but he would not show me his 200 yard offhand targets with his Bench Rest rifle.
)
Remember three shots are the Golden standard. We read this all the time, the inherent accuracy of a weapon is determined by no more than three shots on paper. Learn and obey!
Too bad I ruined the three shot group turning it into a ten shot group.
Hornady's shot well
Rem Core lokts did not shoot well.
My Rem M700 in 6.5 X 55 likes Rem Core Lokts, and loved SMK's too, go figure.
Remember, three shot groups are the Golden Standard. Obey what you have been taught!
I think, as in any rifle production, there are good and a few bad. Look for scalloping on the right front rail and walk away if you see it. The rifle may feed well, but, if it does not, you can't fix it. I absolutely recommend bedding the action and free floating the barrel. This is the secret sauce on every factory rifle I have owned. Factory bedding is adequate for minute of deer, but if you bed the action and free float the barrel, these Classics can shoot extremely well.