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Ok. I get the drift. There is a click here that doesn't like to hear or discuss things they don't agree with. So unlike most shooting groups. I'm too old to swim against a cold current. Merry Christmas to all anyway and Good Bye.

Well Al, the good news is that I'll never be building one for you! LOL!!!! Cuz I'd probably never build one without doing it!

Maybe this will help a bit better butch. I cannot make a 3D computer model into a 2D drawing that will demonstrate the problem, so I created a simple 2D model to show the issue. The model is not to scale, and the thread size and face angle and tooth profile are different. But it is...

Ok Butch, I'll assume you are not being nasty and humor you. Since my explanations don't make sense to you, I'll assume that I am just plain lousy at explaining why its important. So rather than try again, why don't you just google "lapping lugs accuracy". You will also find that lapping the...

You don't have to get nasty butch. I think I have explained why it matters "in my view". No skin off my teeth if you don't agree or if I didn't explain it well enough. We can agree to disagree. If I knew someone in the new world, I would have been happy to ask them instead. "In my view"...

At least some of that was my point to others. There are MANY factors and some are more important than others. However, my concern was that this particular concern might be bigger than some think it is. I thought it might be similar to bedding - which is one of the biggies. If you review my...

Well....... I have learned a lot as a result of researching this little problem. I consulted with an expert in Europe whose whole life revolves around threaded joints - albeit not with Rifles. He didn't do an analysis (and probably wouldn't without being paid), but was willing to offer the...

I think we have all done that before!!! I am too new on this forum to have goofed that way, but with time it will happen...... LOL!!!!

They would appear to mesh just fine. Thread gauges are not long enough to demonstrate the problem. It would be better to put two bolts together to see it. Thread gauges are used to determine what the thread is assuming that you already know if it is metric or SAE. They don't work really...

Wow, where do I begin...... Lapping the lugs has very little to do with your machining. If your machining is perfect, and assuming that you face the mating lug surfaces in the receiver, and assuming that the bolt is factory, then the bolt lugs will not usually be perfectly square to their...

You are funny Butch! Your sarcasm is very well done. But just in case..... Index doesn't matter cuz you are rebarreling and even if you are just re-cutting the chamber with a barrel that has letters, you just cut the shoulder till they align and then cut the tenon to the right length and...

Metric and sae thread specifications differ in how they are designated SAE threads are described in terms of how many threads there are per inch of thread shaft. So 16 tpi (threads per inch) means that there are 16 threads per inch of shaft. In metric the thread is described in terms of how...

I have Harold's book too. I will read that section again. Who knows, it may shed some light on the 1.6mm pitch vs 16tpi. I can see how it may or may not make any real difference. But given the plethora of other things we do that we "think matter", I'm not willing to just ignore it because its...

Hi All: I'm late to this thread. I ran across it because I'm rebarreling a 22 PPC USA target model L461 myself. The barrel thread has been a mystery to me until I ran across this thread. It all makes sense now. A big thanks to Joe for the drawing information. But I am REALLY curious about...

Your first comment says it all. Glass is much harder than steel. Whatever affects glass will affect steel, but it is completely incorrect to conclude that what does not affect glass will not affect steel. Cheers!