Went out this morning to try some other rifles with Power Pro 4000 MR, began shooting at 6:30 am, temperature was 86 degrees.
First rifle 24" 243. Non moly coated 100 gr nosler partition. OAL 2.665" Each velocity listed is an average of four rounds.
243:
40 gr 2850
41 gr 2925 had best accuracy @ 3/4".
42 gr 2955
43 gr 3060 group opened up
----------
Second rifle 284 win with 23" barrel and 3.1" mag box. Moly coated 160 accubond OAL 3.085" Temperature 89 degrees
284:
53 gr 2735
54 gr 2765
55 gr 2815
56 gr 2845
57 gr 2875
55-57 shot nice 1/2" groups
----------------------
Retried the most accurate load with that 30" 7 rem mag. It was
64 grs. Today it didn't shoot at well even though the temperatures were the same. Velocites were the same approx 3118 or so. Four shot group approx 1 1/2".
------------------------
Will be testing a 300 win mag next.
