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6GT and Reloder 15.5

jdoubleu

Supporter
Supporter
Minuteman
Apr 27, 2021
11
5
Califonia
Have any of you worked up loads for a 6GT with Reloder 15.5? I will be using Berger 108s with CCI 450s. Any info would be great!
 
Just picked up 8 pounds and ran a ladder today with 109s & 450s in HDY cases. Looks promising, but can't say much more than that right now. Got up to 34.8 grains with no pressure signs in 80 temps. Hoping to replace Varget with this powder.
 
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Been running it for over a year. Multiple bullets and barrels, Wife and I both run the GT. All ran 33.5 to 34.5 around 2920 to 2970. Max out around 35.5 to 36 according to QL. Mainly running 105 hybrids 109 LRHT and 108 BTs.
 
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I currently use 34.1 grains of 15.5 with the cci 450s and 2920 of velocity. There is also some good information on the 15.5 in the 6gt thread.