Author Topic: .257 cal 101 gr. BBTs - First Run  (Read 636 times)

rsterne

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.257 cal 101 gr. BBTs - First Run
« on: May 16, 2016, 02:12:29 PM »
I received my 4-cavity Mould from Al a couple of days ago, and had a chance today to cast the first bullets.... It took me a while to get the right temperature, the long skinny bullets were somewhat wrinkled until I got the mould hot enough.... I did some with 1% tin and some with 2.5%, and I think the higher tin content worked better.... Here is a photo of the mould, in a Lee 6-cavity handle....



This is my first NOE Mould, and I was delighted at the quality.... The bullets dropped at 100.7 gr. in 1% tin and 100.3 gr. in 2.5% tin, and I couldn't measure any difference in size.... The back of the nose ran 0.2575-0.2585" and the driving band about 0.002" larger, just like it was designed.... The center portion measures 0.246", so it shouldn't drag on the lands.... Here is a closeup of some of the 2.5% bullets....



I was pretty picky when I sorted the bullets, and threw about half back into the pot for next time.... but I got enough bullets of each alloy to allow me to test in my Monocoque, once I get the chamber machined.... Here was what I ended up with....



I'm really looking forward to testing these.... They certainly look like they should have a great BC....

Bob


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grumpy

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Re: .257 cal 101 gr. BBTs - First Run
« Reply #1 on: May 16, 2016, 02:23:29 PM »
Fantastic. Cannot wait to hear some shooting results.
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ShakySarge

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Re: .257 cal 101 gr. BBTs - First Run
« Reply #2 on: May 16, 2016, 03:32:35 PM »
x2!
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Truckr6969

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Re: .257 cal 101 gr. BBTs - First Run
« Reply #3 on: May 17, 2016, 03:07:46 PM »
Hmmmm interesting
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