Ive been told that no barrels are perfectly straight and that they need to be installed so that they direct the bullet up or down ( preferably up i guess) instead of left or right. Does anybody know if this is true?
thanks
thanks
The part about barrels not being perfectly straight is true. In fact, NOTHING man made is perfectly straight.Ive been told that no barrels are perfectly straight and that they need to be installed so that they direct the bullet up or down ( preferably up i guess) instead of left or right. Does anybody know if this is true?
thanks
Guess that depends on how you figure the curve in the first place. If you center the barrel for chambering in a four-jaw using a long indicator or rod, then check/mark the position of the high point at the muzzle end, you should have that hold up at installation.
I think this thread will become ten pages of opinions with zero evidence to back them up.
Very few, I bet.Curious how many builders that “time” the barrel, verify it is still “timed” when not stressed between two independent chucks, and freely hanging from a single end at the receiver.
You dial in the muzzles, so you’re taking slightly different approach to accomplish basically the same thing arent you?Curious how many builders that “time” the barrel, verify it is still “timed” when not stressed between two independent chucks, and freely hanging from a single end at the receiver.
Yes, sort of, and no, sort of....You dial in the muzzles, so you’re taking slightly different approach to accomplish basically the same thing arent you?
Those that time the muzzle are concerned about the angular misalignment of the throat. I'm not. My focus is on concentricity. I did the calculations once for a chamber that wasn't/timed aligned with the bore over the length of the chamber. We have very good barrels these days .0005" to .0010" is not much. Lot's of zeros beyond the decimal point. Concentricity we can measure and see. Angular misalignment over the length of the cylinder section of the bullet is very difficult to measure. Then lets consider the runout in the ammunition.
YMMV
I think it depends on how you setup your barrel to chamber. If you dial in the muzzle and the throat and then prebore to the throat then it shouldn’t matter one bit, if you only dial in the chamber end and 2.75” in with your dti then time the muzzle and run the chamber Reamer strait in... Just how I see it
Exactly. It all depends on the set up and how the chamber is going to be cut. Like I said there is more then one way to skin that cat.