6.8 max loads -pressures and velocity

This is only to show max loads- any load between 58-60k should be considered max. Start 1.5-2gr lower and work up while looking for accuracy.

120SST---------2.3"OAL-- IMO apx 30-31gr is max fill for ball powders and the 120 sst loaded to 2.295
For that reason CFE, Lever, 2520 and 748 are too slow.
This test run with an 18" 5R barrel, pressure could be higher with 6 groove barrels or with barrel made with a higher land -groove ratio/smaller bore area.

33gr Lever-2497fps and 49201psi-compressed max fill
31gr 8208-2558fps and 56923psi-compressed max fill
31gr H335-2542fps and 57091psi
30gr Xterm-2506fps and 57279psi
33gr 2520-2584fps and 54789psi-compressed max fill
28.2gr 2200-2609 and 57312psi
29gr 2200-2652fps and 59778psi
29gr 1200R-2597fps and 59703psi
27.5gr Norma200-2536 and 58060psi
29.5 N530-2612fps and 57kpsi
28.2gr 10X-2561 and 55900psi

95gr TTSX-Top performing powders, any slower burning powders will produce less velocity
29.5gr 2200-2801fps-54260psi--28.5gr has shown to be accurate with the 95TTSX and 110gr bullets. est pressure 51500psi
30.5gr 2200-2889fps-57928psi
30.5gr RE7-2905fps-58100psi
29gr Norma 200-2819fps-55052psi
29.gr Norma 200-2862fps-57954psi
30gr N530-2709fps-50974psi
27.8gr 1680-2854-58163psi

85TSX---Top performing powders, any slower burning powders will produce less velocity
1680-30gr-3047-56728psi
2200-32gr-2994fps-53313psi
Norma 200-31.5gr-2993fps-53348psi-max fill
RE7-31gr-2945fps-53436psi-max fill
 

rgilbert

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Thanks H
 
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