using one bolt in two actions

[sable tireur]

Here is the other post from January 2023:

https://www.longrangehunting.com/threads/need-to-replace-a-schultz-and-larsen-m68dl-bolt.322016/

The headspace gauge for most standard belted magnums is 0.220" for the Go-Gauge which is from the base of the rim to the front of the belt. This is a standard for most belted magnum cartridges with only a couple of exceptions.

As measured from the end of the case rim, the length to the end of the belt is approximately .219"-.220" For comparison purposes, this length on the 450 Marlin case is .252"

Any of the standard belted headspace gauge manufacturers will work for the 0.220" dimension. Be sure to check the gauge. You can even rent these for a small amount of money.

At this point in time, unless the shop in Denmark can help, it's a good bet that you should start looking for a second rifle chambered for a standard belted magnum case.

Finding a machine shop to manufacture a one-of-a-kind bolt (especially one for rear lugs) for a reasonable amount of money is not going to happen for several reasons. Just creating the drawings for manufacturing will be expensive.

Locate a nice Schultz and Larsen M68 and buy it.

Best.

 

[pavementends]

As belted mag cases head space off of the belt there should be much less difference bolt to bolt than with cases that head space off of the datum line on the shoulder. Head space gauges should allow you to verify the bolt is safe in both rifles. Note one would use the same gauge. S&L made good stuff. On having a bolt made, if you found a shop that was just getting into CAD stuff it would be an interesting project to copy the bolt but not cheap. Since you will probably not be shooting both rifles at the same time I would verify the head space and move on. Of course that means selling one of them would be problematic.
Final thought: If you can't measure it, it may be real but it ain't science.
Final thought 2: If you are a hand loader and providing the bolt closes, you can size cases to head space off the shoulder although this may preclude using factory ammo.











as

 

[jareese]

the barrels will also need reaming to suit…not a simple no gauge job unfortunately.

The barrel will need reaming huh?
Either you're meaning to say something and it isn't coming out correctly, or….

 

[Raider4044]

As long as headspace is correct, then you're fine, but DEFINITELY check headspace.

 

[MagnumManiac]

The barrel will need reaming huh?
Either you're meaning to say something and it isn't coming out correctly, or….

Headspace is altered by the distance from bolt face to datum, if it is wrong, then the chamber requires a reamer to adjust headspace, and no, just because a different bolt fits the rifle does not mean headspace will be the same…

Cheers.

 

[MagnumManiac]

Say it's a Remington 722 in 222 Rem Mag. Would a bolt from another Rem 722 in 222 work in this action ?

Yes, but headspace may need alteration. Had this very job on 2 REM 722's, one in 22-250 and the other in 222 REM Mag, both bolts were lost in a boating accident. Honestly, I never store a bolt separate to the rifle during transport, both rifles survived the accident because they were trapped in a storage box and recovered…the bolts went overboard in a separate bag. Neither rifle needed much work to get them to work again, just replacement bolts for each.

Cheers.

 

[pavementends]

Unless we are speaking of a belted magnum in which case head space is from the head of the case to the front of the belt. That is why headspace gauges for belted magnums are so short and listed for multiple cartridges.