chambering question

[Nobade]

I'm about to try something I haven't done before and wondered if anybody here has any experience with it. I want to make a 30-223, by doing the body and shoulder with a .223 reamer and following with a 30 cal neck, then a 30 throater. If I remove most of the stock with a boring bar after dialing in the bore with a pilot, will the .223 reamer follow the hole well enough or do I want a removable pilot one with a 30 cal pilot on it? It seems to me it should work fine, but like I said I haven't tried it yet.

[gunnut69]

I've never done this but experience says the way to go is with the floating pilot reamer..

[chk]

Is a 300 Whisper the same as a 30-223? If so reamers shoud be available for it. Dave

[Wildcat Crazy]

I believe the .300 Whisper is the .30-221 FB.

   WC

[bfoster]

I've occasionally cut chambers without a reamer, using boring bars only.

There are couple reasons that you might do this:

1. You desire a chamber that standard reamers won't cut. For instance, you might wish to size the chamber to fit a particular lot of brass that has one or more dimensions that checks several thousandths of an inch below SAAMI  or CIP max.

2. You might by quoted a long delivery on the reamer you want. There are a finite number of reamer makers, here and there they are all busy.

Beyond this, why not just use the finish reamer to cut the chamber? Given care, (and as gunnut69 suggests, a good fitting floating pilot does indeed help in producing a near perfect chamber) there isn't a need to rough the chamber unless you're running production. Experience has taught me that here and there a roughed chamber can produce challanges when you go to finish it.

Bob

[Steve P]

Use the reamer for a 30 TCU,  .308x45, or .308x47.  All cartridges have been use in sillywet.  Should be readily available from clymer, etc.

Steve  

[kend]

If the 300 Whisper (30/221) will do you can rent the reamer here, http://4-dproducts.com/chamber_reamers.html