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I have a reasonably old reloading book and they briefly touch on a possible cause of keyholing where a bullets rotational forces are such that it stands like a top over shorter distances.
Anyway have a read of the article its about halfway down the page but read the whole blurb its not bad.
I also included who the author was so the plausible cause for this explanation is coming from a person with some authority on the subject matter. It is a 1958 Ed.
Then too, there is - as was the case with one 1917 Lithgow I own - that the bore is so badly corroded that the bullet is not stabilized in the slightest before it leaves the barrel.
I have two rifle that will not stabilize their bullets. One is an Italian Carcano carbine & the other is an Egyptian Hakim. Both of them are so corroded as to have very little rifling left.
Bullets that are not gripped & spun by the rifling will not stabilize, no matter what you do. :ugh:
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Originally Posted by Merle
Right guys, but we know that part. It's the high pressure loads he speaks of that are interesting. Many are trying far too hard to achieve a military velocity and instead should likely use the load listed as most potentially accurate...I think...Quote:
Originally Posted by Paul S.
Been down the HV load path spent ages & $'s for naught back off a few grains and Viol la it came together besides just have to play to find the nodes.