I was always under the impression that the New Haven CRF Classic Model 70 was a one-piece bolt design? But just recently I have been told otherwise
ATM I cannot gasp this information until I hear it from a few others(I don't want to step on any ones toes here so please don't take this the wrong way )

Unfortunately I don't have any NH CRF Model 70's on hand so I cannot inspect the bolt. But I have just been in contact with a friend regarding this, & he informs me that the CRF Model 70 bolt is indeed a one-piece design.
I remember reading somewhere that the push-feed bolt had the two lugs brazed on, & maybe? the bolt. But never have I heard that with the CRF bolt.

So I thought I would put up a thread so I can get as many answers as possible.

# Which bolt manufacturing process did Winchester(NH) use to make the CRF M70 bolt? And, do the new FN Model 70's use the same method?


Thanks

The CRF bolt is a 3 piece braze job just like a post 64 push feed.

Edited to add I am wrong about this. It is one piece.

no it isnt, its 2 piece amnd not brazed like a remmy

I stand corrected. I reveiwed the info in my 3d Edition Bolt Action Rifles and it is listed as one piece. I am not sure if the handle is integral, welded, or brazed on.

All post '64 M70 bolts are two peice whether push feed or crf. The rear of the bolt body is turned down and splined. The handle is investment cast with a collar which is then pressed on for a heavy interference fit. Before the the handle is pressed on a copper washer is placed on the bolt which is the brazing medium for the assembly.

Find a copy of The Bolt Action Vol. 1, by Stuart Otteson. He explains and illustrates the process in detail on the chapter devoted to the post 64 M70's.

I just looked at the bolt from a early 90'sclassic I have and I can see an ever so faint copper line where the bolt handle collar joins the bolt body.

FWIW - I think a few rifle makers like Echols and Simillion machine a hole through the handle collar and pin it to insure the collar never slips.

Well I stand corrected . Thanks for all the info men.

Whilst on this subject I would like to pick your brains & confirm which of the other brands are of a one-piece design.
Ruger M77 Hawkeye(cast).
Sako 75 & 85(cast).
CZ 550. Not sure whether these are machined or cast?
Weatherby Mark V """"""""""""""""""""""""""""""""""
Howa 1500 """"""""""""""""""""""""""""""""""

Please add any others you can think of.

Thanks again

I am liking the CZ more and more.If I am not mistaken,the CZ is an all steel one piece bolt with a welded on steel bolt handle.Thought I had the cheapest but had the best all along.

I know Ruger & Sako are a one-piece cast-bolt design, that's 100%! Pretty sure the Mark V & Howa'a are as well? Not too sure about the CZ though

There is a nice article about this very subject in the latest (January 2009) issue of Rifle Magazine on page 18.