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If one is chasing threads in order to correct finish and minor misalignment, a piloted tap can probably do a fine job. No, not probably, it can definitely do a fine job. What it cannot do is correct grossly misaligned threads as can be done with a boring bar and single pointing. I had once...

If, when the 6 BR was introduced, good quality brass had been available, I believe we would have close to an equal number of BR's and PPC's on the line today. Trouble was, BR brass was such a royal pain to form and PPC was so easy, it made the choice for you. I really think what we see today is...

Trap shooters are known to embrace some pretty silly concepts from time to time and the release trigger was one. The idea was that it would reduce flinching. I can't think of any reason, even a poor one, for using one on a BR rifle. Regards, Bill.

You can often measure the distortion on a fired case or on a chamber cast. The distortion disappears when the barrel is removed. It is usually not evident if the rifle is chambered for a standard cartridge but is definitely there if the rifle is chambered WSM or even a belted mag. Winchester...

I always re-thread Model 70's to 1 1/16" just so that I will have a complete thread in the receiver rather than the interupted thread they have. When the barrel is tightened into the receiver with the interupted thread, the chamber is distorted; especially if in the WSM or other large diameter...

If I have a BR barrel in which the lands and grooves are not co-axial, the mail truck travels both ways. When I buy a select match barrel, I like to think it will be one. Regards, Bill.

Very exciting (yawn).

1 in 13 should be fine for the Sierra 175. The 154 Lapua is longer and 13 stabilizes it just fine. In fact, I have fired 175's in a 14 with good results. Regards, Bill

Back in the late seventies I used to shoot with a fellow name of Alex Bulman. Alex drove a big, new Cadillac and sure enough, someone popped the trunk and stole rifles and other stuff. At that time I was driving a 1964 Comet which I bought from Rent a Wreck for 125 bucks. I pointed out to Alex...

Yes it should. I suspect the gauges, while a good enough comparison tool, are not precise enough for a positive measurement. Getting a precise measurment, even with a certified ring gauge, is not that easy. Temperature of either the measuring instrument or the piece being measured can make a...

So, if you have a straight barrel, are you pretty well screwed, or what? Bill.

I have a Clymer Palma reamer which I like OK. I also have an Obermeyer Match from PTG. I have standard reamer with no throat which I use a lot and a tight neck (334) reamer I use for the occasional hunter rifle. I have another reamer I got just for "F" class rifles (Leeper "F") from PTG and I'm...

Here we have a poor description of a problem, no pictures, no meaningful dimensions and a lippy poster. I don't see this one getting resolved any time soon. Regards, Bill

The evolution of "F" class has been fascinating to me. From the "any rifle, any sight, fired from any rest", as put forth by the originator, George Farquharson, it has evolved into a multitude of contentious variations. Along the way, some of the fun has gone out. I have a personal prefernce for...

I have used a 22-250 for "F" class a little bit. Mine is an eight twist McGowen barrel fitted to a CIL 950T action (Savage Single shot). It hasn't shot as well as I would like but I haven't worked with it enough to be fair. With 80 grain bullets at just over 3300fps, it does shoot pretty flat...

Jim, there wouldn't have to be much residual lube in the barrel to use up any oxygen which would be present when it flashed off. Still, I think most makers just flood the furnace with inert gas or a flammable gas to burn off oxygen. To anneal an action without scaling, I wrap it in stainless...

Of course, in Canada, there are Compensation mandated safety requirements which interfere with productive work as well. Sometimes the inspectors are a bit flexible though. A few years back, I was working with a bridge construction company who were building a bridge (no surprise there!) near my...

For special orders, I have gotten pretty acceptable service from every vendor from which I have ordered. PT7G has been very good in this regard. I have had some reamers take some time but sometimes I take some time too so I don't notice! The longest wait has been from Hugh Henriksen but his are...

If the chatter is caught early on, it may be eliminated by filling the flutes with a heavy grease or with plasticene. The alternative is to wrap the reamer with cloth or paper toweling and cut through that. The root cause of the chatter may be a pilot which is too loose but if the relief angles...

The tool as shown by Dennis is pretty well what I have always used to turn barrels. Plainly, my descriptive abilities are lacking! A good cobalt steel is best. I also grind a similar tool of carbide which lasts better but, since the edge can't be ground as fine, creates a little more pressure at...