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  1. #1
    Member Puffin's Avatar
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    May 2012
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    +1 on the NBT tuning, as expected first loads tried with BTs were the best I've shot with the .280 and presumably could be made smaller still.

    Below is the Classic Hunter and 140NBT as no 150s on-hand though I gather the form factor on the 7mm BTs are all much the same though (about 1.7 according to Litz's measurements from his US military commissioned study). The Classic Hunter front end looks to be very similar to the BTs to my untrained eye, certainly a tangential profile where it meets the shank - no line like on the secant-only VLD, so hopefully they will be just as easy to use. Maybe the better FF of 2.0 is solely due to that big boat tail ? Perhaps the less-pointed tip will open more reliably ?

    7mm, care to share your VLD failure-to-expand experiences ? Did you have to uniformed the meplats in the past or maybe anneal the tips ?
    Other than ease of load development this would be my other concern with Bergers. I'm never too sure what to make of the anecdotal evidence on them. The thicker jacket yellow box items prior to the re-introduction of the original thickness in the orange boxes can make it a bit uncertain as to what was being used - target or hunting/original target.

    And with the 150BTs; what have you found to be the useable terminal velocity range please ? Any blow-ups experienced above this ?.... and if so was this on shoulder hits (on say reds) whereas behind the leg has always been good right up to muzzle velocity ?
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    Last edited by Puffin; 02-08-2013 at 01:30 PM.

 

 

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