Well we do make our SHOTS line in the 55gr SP, but that should be in a box as well. The bag you describe is our "2nds" bag, and I am not sure how your gun shop got them?? We don't export our 2nds, only the boxed product because of licencing issues with the State Dept.
The SHOTS 55gr is a...
It can handle any velocity you throw at it, if you are asking if there is a breaking point? The solid base design allows for extreme velocities. Our book has a high vel. at just over 3700fps.
We have reloaded our .223 Brass 38 times (Neck Sized) in our lab and it still shoots .3 "
Here is the result page.
http://www.nosler.com/brasstest.html
Or Buy
http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=787881
http://www.midsouthshooterssupply.com/item.asp?sku=0011510070...
It is in Reloading Guide #5
It was tested with a 26" and a 1-10"
The 150 grain Ammo looks like it might be around 3300-3400 fps
The 165 will probably be around 3100-3200 fps
All this is still in the air.
Once we finish data for the ammo I will make sure to post the info.
For the Dakota's we won't be using Nosler Brass. Just because we don't make it :grin: I will post once we finish the loads with the brass we will be using, have a feeling it will be dakota brass. :lol: