same reloadingdata for bst and accubond?


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TheSwede
March 23, 2013, 10:14 AM
Hi

I've great norma powder data for 150grain nosler ballistic tip. I wonder if i dare to switch only bullet to 150grain accubond? Except for the bonding these bullets look very alike and they should bring the same pressure right?

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WYOMan
March 23, 2013, 03:01 PM
Not the EXACT same pressure. But to be prudent, I might back off a little and work up again. Jacket thickness and composition, and bearing surface and overall bullet length will change things. I run two different bullets of like weight and profile with the same powder charge, from the same rifle, and a 140 SMK will clock, on average, 70 fps faster than a Hornady SST, in my case. I do, however have a slight difference in seating depth btween the two, as measured from the ogive. So the pressure is not identical.

ngnrd
March 23, 2013, 05:14 PM
Nosler doesn't differentiate between the BT's and the AB's. They list the same load data for both. That being said, if you're anywhere near max, I'd back off just a bit and work back up.

TheSwede
March 26, 2013, 09:05 PM
Huge thank you! this board is Grrrrreat! :)

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