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5/5/2016 2:08:01 PM EDT
A lot, if not most, of the members here are familiar with Rocky Mountain Reloading.  I got 1k .224 64g 'Bonded' SP's.  RMR won't give the manufacturer, by an agreement, and I respect that.  But, RMR can't /won't provide the B.C. of the bullet they sell.  They said Google it.  Well, I did and I still cant find an image or B.C.  Strangely, RMR offers a 62g almost identical except the weight. There are several 62g BTSP but one in particular that might be 'it'.  I'm thinking of the 62 Fusion.  I haven done any test to see if the jacket is a true 'jacket' or is plated.  Do any of you have any more information, B.C., on this 64g that looks a lot like a Fusion, just a little more bearing surface??  B.C. would help a lot in my ballistics comp and work-up.  Has anyone reloaded these?  They haven't been available very long.Thanks.
5/5/2016 2:35:24 PM EDT
[#1]
BC can be easily calculated..
http://gundata.org/ballistic-coefficient-calculator/

You'll be all right Mr. Grafton!!
5/5/2016 2:50:50 PM EDT
[#2]
I bought the same thing. I am assuming the following:

1. Speer 64gr Gold Dot JSP *
2. Winchester 64gr solid base bonded JSP

* I'm betting on this one.

I believe BC--.267 but no guarantees.

There is a 65g Sierra SBT in the Western Powders load guide that I intend to use as a starting point for the Accurate and TAC powders I have. YMMV.

Nosler also has data for a 64g "bonded base" bullet as well.

Nosler 64g

5/5/2016 2:55:29 PM EDT
[#3]
64 grain Speer Gold Dot = .270 BC
5/5/2016 7:29:40 PM EDT
[#4]
Federal Soft Points
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