375 Cheytac actual load data

[Sleepertruckguy]

Please post your data. This is what I have so far.

Factory Cadex 32in barrel 1:7 twist. All avg speeds taken from 5 shot group. Barrel warm. 60 degrees. SMK and Bergers shot from .005 off lands.

350SMK:
RL25- 125g = avg 2,960fps (SD 4.0)
RL25- 126g = avg 2,986 fps (SD 16.4)
RL25- 127g = avg 3,034fps (SD 21.8)
RL33- 125g = avg 2,790 fps (SD 6.0)
Retumbo- 129g = avg 2,994fps (SD 14.0)
Retumbo- 130g = avg 3,015fps (SD 14.0)
IMR 8133- 128g = avg 3,019fps (SD 6.0).....excellent groups
24N41- 136g = avg 2,947fps (SD 9.6)

407 Berger Solids
RL33- 135g = avg 2,907fps (SD 13.8)
RL33- 140g = avg 3,008fps (SD 7.2).... grouped well but showed signs of over pressure on case head/ejector marks/primers okay.

Factory SBR 353 solids
Avg = 2,647 (SD 20.2)

 

[Sleepertruckguy]

Bump,
Bergers 379g solids (.107 off lands) 137g RL33 = Avg fps 3,008 fps SD = 9.8 (8 shot string)

 

[Sleepertruckguy]

Berger 407g
N570 - 131.5g
Avg speed 2,943 FPS.
SD 5.5
EXCELLENT GROUPING (1/4 moa)

 

[Long_Action]

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