I'm waiting for my 9.3x57 to arrive and was wondering about throat length if I rechamber it to 9.3x62.

Is there any issues with rechambering and or the throat length?

This will be my first 9.3 so ill have to get geared up with dies, bullets, making brass. I might just spring for some new lapua brass.

Any tips?

Rick

Yours is the 98 variant, right? No issues. It should be a simple rechamber.

M98 husky.

Is the throat length cut with the reamer?


Lets take a different caliber, say a 6.5x55. If a guy wanted a short throat swede chamber on one barrel and a long throat on a second barrel, would you have to use 2 differently made reamers?

I have a reamer that has no throat cutting on it and I then use a separate throater to make it anything I want. It's a .375 H&H.

I believe you can get any of them that way.

Most reamer makers (ALL that I am aware of) supply the reamers however you order them, for a price. That includes not only whether the reamer cuts the throat or doesn't, but if so, at which angle the throat is cut. They will slso give you a choice of solid pilot or "live" (interchangeable) pilots.

Thanks guy. Time to learn about reamers for me

Whats/How is the process of reaming a chamber done?

The pilot? into the bore/lands, is it a bronze or brass as to not damage the bore?

Reaming a barreled action? Mauser: Is the barrel chucked in a lathe and reamed right though the reciever?
Is it done by hand with a hand held chuck?

Reaming 101. Please . Thanks Rick

Unless you are going to do several best bet is to rent a reamer. They come with a fixed tip just hardened steel. Or they come with a bushing fitted on the shaft for more $$. Both are smooth and won't damage the lands.

While you can do it by hand in the action I would not recommend it. Pull the barrel mount in a lathe and proceed. Unless this is a learning exercise since you don't have a reamer I bet you can get it rechambered for about the cost of the reamer.

Ramrod, I will be sending it to a compitent smith, not sure who yet.

In otherwords im trying to find out the "Right way" from someone that knows their shit

quote:

In otherwords im trying to find out the "Right way" from someone that knows their shit

Now I understand. There are several that post on here that could do you an excellent job.

Post the question on gunsmithing.

quote:

While you can do it by hand in the action I would not recommend it. Pull the barrel mount in a lathe and proceed. Unless this is a learning exercise since you don't have a reamer I bet you can get it rechambered for about the cost of the reamer.

Ramrod is correct.

With this particular re-chambering, it is staightforward enough that you can possibly even get it done for LESS than the cost of a reamer, IF you choose a gunsmith who already owns that particular reamer, and IF the reamer you would have ordered would have had custom throat angle, floating pilot, etc.

Also, since this is going to be a fun/hunting rifle and not a "match" gun, you don't have to worry about reamer throat angle, type of pilot, etc. A good gunsmith who has a 9.3x62 reamer will doubtless have one he trusts (or will have had it re-worked to where he CAN trust it), so as he is doing and guaranteeing the work, let him choose the tools.

Very basically, all he has to do is unscrew the barrel, center it in the lathe, cut the chamber within tolerances, polish it a bit, and screw the barrel back on. He will not likely have to cut barrel threads, move the barrel shoulder, blueprint the action, that kind of stuff. So should be relatively quick turn around and relatively inexpensive.

On this sort of conversion, I wouln't even consider buying my own reamer for just one gun.

If I were to do this job, I would first take a chambercast, and measure the diameter of the neck.
in older guns this might be slightly larger than wanted. I have experienced while rechambering from 8x57 to 8mm-06, that the old neckpart have a larger diameter than the fresh cut neck, which leaves a "belt" on your lower neck. Looks hideous. Easy to set back the barrel one thread and then chamber, all problems gone.

quote:

Originally posted by Bent Fossdal:
If I were to do this job, I would first take a chambercast, and measure the diameter of the neck.
in older guns this might be slightly larger than wanted. I have experienced while rechambering from 8x57 to 8mm-06, that the old neckpart have a larger diameter than the fresh cut neck, which leaves a "belt" on your lower neck. Looks hideous. Easy to set back the barrel one thread and then chamber, all problems gone.

Yes, you are right, Bent. I assumed, which I know is a mistake, that determination of shoulder diameter had already been done and it was known that the 9.3x62 reamer would clean up the 9.3x57 chamber. (If that has not been done, it would be the logical first step.) Even if cutting off one thread, and then picking up/cutting one new thread and setting the shoulder back are needed or desired, it is still no big effort, as I'm sure you'll agree.

(And actually, even if the barrel IS cut off one thread and the shoulder set back the equivalent, cutting one more thread is not really necessary, though it is a cleaner, perhaps better way to proceed.)

Bent and Canuck and Ramrod. Thanks for the tips.

Think Ill get some cerrosafe and see what I measure first.