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Updates ? ,particularly with RL-33 powder?
300 Norma
26.0 BBL
1.9 Twist Broughton
220 Sierra Match
OAL; 3.463 to 3.502
Powder; Ramshot Magnum 85.2 to 90.8gr
Primer; WLRMP
300 Norma
240 Sierra Match
3.436 OAL
Powder; N-560 80 to 81gr
Primer; Fed 215M
300 Norma
240 Sierra Match
3.436 OAL
Powder; H 1000 81.5 to 81.7gr
Primer; Fed 215M
240 Sierra Match
3.436 OAL
Powder; Ramshot Magnum 82.4 to 86.9gr
Primer; WLRMP
Berger 230gr Hybrid Target G1 .743 G7 .380
H1000 85.5 gr
Retumbo 87gr
89 degrees
70% Humidity
Alt. 100ft
Rifle Surgeon XL 27in 1-10 Krieger 5R
Accuracy was under a 1/2 MOA with both loads, these were run to est. the high end on pressure I have not chronographed them yet
Loads were run up until pressure then backed up to what is posted I would start under both charge weights and work up to them.
What is being found to be the best twist rate for the 300 Norma?