Yes Sir, that is correct.That was on believe the target interview. Fclass john also did a video where he deliberately cocks the bullet sideway enough it is clearly visible on video. It didn't really make much difference on target.
Yes Sir, that is correct.That was on believe the target interview. Fclass john also did a video where he deliberately cocks the bullet sideway enough it is clearly visible on video. It didn't really make much difference on target.
You will just have to take my word that the rabbit hole you are going down has been well used through the decades.Because I don't have enough stress in my life, lol.
It's a rabbit hole I've always wanted to go down.
They make an amazing paperweight for your desk. Good conversation piece as well. As for reloading, they are virtually useless and my best formed brass with virtually no runout, shot nearly identical at 600&1000 yards on the target. If it doesn’t improve your accuracy, there is no reason to bother measuring it.
If you have ever chucked a sizing die up and checked the bore with an indicator, many will have as much as .002 out of round. I suppose this is due to the case hardening procedure after finish machining.I would think a machinist would tell you that rolling the case around and assuming the body is a perfect zero reference and a perfect circle accurate to 0.001" and it's rotating on a true centerline of the circle is ridiculous. If I had to guess I would think the run out on the body is around 0.001". Maybe that's good enough. The real rabbit hole is if you don't like the run out what do you do about it. Do you buy a new press and dies and hope it improves the run out. Guys on this website can tell you how they improve run out. I cannot. I shoot 2 accurate varmint rifles. I am not trying to win matches. The replies will be interesting and informative.
Food for thought.
The price is reasonable and hey, if a $55.00 investment in a tool gives you piece of mind that you are building good ammunition then its well worth the money.
It would be interesting to do a test with a precise F class chamber/barrel vs a generous factory barrel.That was on believe the target interview. Fclass john also did a video where he deliberately cocks the bullet sideway enough it is clearly visible on video. It didn't really make much difference on target.
I think that could be true, especially a sloppy AR chamber.It would be interesting to do a test with a precise F class chamber/barrel vs a generous factory barrel.
Years ago I separated 50 factory 5.56 rounds by runout at 5 and below and .006 and above and the result was a significant improvement in group size with the .005 and below.
Not scientific but I repeated it once more with same result.
Been there done that. It conducted this test with three separate F class rifles and there was no statistically significant difference between the ones with less than 2 thou of TIR versus the ones that had 4.5-7 thou of TIR (as measured at the top of the neck, not bullet tip).It would be interesting to do a test with a precise F class chamber/barrel vs a generous factory barrel.
Years ago I separated 50 factory 5.56 rounds by runout at 5 and below and .006 and above and the result was a significant improvement in group size with the .005 and below.
Not scientific but I repeated it once more with same result.
Been there done that. It conducted this test with three separate F class rifles and there was no statistically significant difference between the ones with less than 2 thou of TIR versus the ones that had 4.5-7 thou of TIR (as measured at the top of the neck, not bullet tip).
There’s nothing wrong with consulting a concentricity gage when building quality ammunition, just don’t read too much into the results.I think I'm going to listen to the experience of the majority and find something else to spend my money on.
I appreciate all the replies.
I think that is a good path. I have had several of similar gauges, the current being the Sinclaire model. Haven't used it in years.....I think I'm going to listen to the experience of the majority and find something else to spend my money on.
I appreciate all the replies.
Even with “V” block designs, case ovality will appear as runout…With that design, the rollers have to be perfect to not ad to the runout reading. The first thing I would do if I bought the one is spin a ground rod t make sure the rollers were round and the holes in them centered. The non rollers designs are fool proof.
but the ones that I have only come out of the drawer when I need to find the source of a problem or evaluate a piece of equipment.
You don't give up. Some of the best shooters in the USA are giving their opinion on this post. Believe what they say.It would be interesting to do a test with a precise F class chamber/barrel vs a generous factory barrel.
Years ago I separated 50 factory 5.56 rounds by runout at 5 and below and .006 and above and the result was a significant improvement in group size with the .005 and below.
Not scientific but I repeated it once more with same result.