Only had an hour to shoot today but I tried the power stem breech plug today with loose T7 fffg powder. On the range it seemed to work great. Only shot three 3-shot groups with it, but two of the three groups measured just under an inch.

Knight Long Range Hunter

250 Barnes MZ, 89.1grains (weighed) of 777 fffg, T7 primer.....0.963" c-t-c

300 Barnes MZ, 89.1 grains (weighed) of 777 fffg, T7 primer....0.993" c-t-c

300 PT Gold, 89.1 grains (weighed) of 777 fffg, T7 primer....2.7" c-t-c

Guess my LRH likes those Barnes bullets with the Harvester EZ sabots.

I didn't have my chony with me but the velocity seemed higher than with 78.1 grains of Blackhorn. Both of these weights are suppose to equal 110 volume measured.

I had an absolutely terrible time getting my power stem out of the ML for cleaning. It froze up tight tight tight. kl