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long range bullets
in the day, there were 2 long range bullets that worked.
the brits used the metford design, somewhat similar to the money bullet, but nose length seems a little less than the money, and where the nose of a true money bullet is 50 to 55% of groove diameter, the metford was at least 55%.
americans used the sharps long range bullet with its varying taper nose.
both bullets were in those days paper patched, the american one being patched to bore, and the brit one to groove.
i am coming to the conclusion that when the big switch to gg bullets happened, nothing as good as the old bullets has yet arisen.
one reason for this is that the 3 main designs, postell, creedmoor, and money, have a basic flaw, which is an unprotected unlubed bore riding section. if they start at bore or less, they instantly become bigger than bore when you light the fire.
this leads to leading, which causes fliers so deadly to long range accuracy.the short metford nose, and the angle it leaves the parralel
minimize this, and the sharps people just accepted bumpup, and designed in the gentle taper at this point, allowing different patch thicknesses to give good results, but all protecting the bullet.
possibly nose bumpup is not a problem with less than 70 gn of powder in a 45 cal, or 60 gn in a 40 cal, but 80 and 70 plus respectively starts to make things difficult.
some scheutzen bullets look almost like a keith type bullet, and this is obviously to avoid nose bumpup, but noone would consider them suited to long range.
leading is one problem with nose bumpup in modern greasers, but even worse is the nose bending sideways when this happens. this is possibly where the postell got its bad reputation.
i would like to design a gg copy of the metford bullet, and wonder if anyone could post a picture of an original?
opinions on this would be most interesting.
keep safe,
bruce moulds.
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