Originally Posted by
upinthehills
Hi Schnyd and RC, thanks for the help.
I would have got back sooner but still puzzling my way along. Guess I'm a 3 steps forward, 2 steps back and then a step sideways kind of guy. I'm getting there though.
I've found one issue and starting to figure another one. I used an aluminum rod a couple of times and aslo a wood dowel. Today I noticed that while pushing a bullet out of the bore I put a small dent in the end of the wood dowel. Maybe it's 1/16" of an inch, I haven't tried to measure it yet. Since the dowel is smaller than the bore, I suppose sometimes the dent lines up with the bullet and other times not. This likely is part of why the Nosler and Sierra bullets look different and measure the same.
Where on the ogive do the bullet comparators measure? On a side note I see that the Nosler and Sierra bullets have a different diameter, basically .307 and .308 respectively. The reviews for the various Hornady and Sinclair tools for this say they have some varience and there are issue even comparing between two of the same brand...
My results with an empty cartridge and bullet where a little confusing too. It was very hard to see the rifling at the muzzle end, becuase the inside of the barrel is black mostly. With sunlight and a 10x pocket magnifier it became clear though, there are 6 rifling lands and they are maybe 1/4 the size of the valleys. So what I see on the bullet I marked with a Sharpie is 3 of the valleys showing on one side of the bullet, not the lands. Or the shape of the lands gets wider in the leade area?
For this I was using a fired case with only a very short amount of neck sizing. Now with this info I think I can do as you guys are describing with a case with more neck sizing ( Wilson dies which do 3/16" of neck sizing ) and use my aluminum rod to help coax the case out without moving the bullet in the case.
I did take some little pieces of 1/4" aluminum bar I had and drilled some different holes in it, "L", "M", "N" and 19/64". So I may have my own ogive measuring thingie now. Or maybe not! LOL.
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