I got out this morning for some much needed recoil therapy.
Somewhat mixed results
By the end there was enough data to determine a cause.
1 brass FC, 1 primer CCI SRP, 3 powders, 1 bullet NOE 279-124 RNFP.
10x
21.0. error 2 no readings
21.5. 2048. 2020. 1958
22.0. 2060. 2082. 2088
22.5. 2104. 2057. 2086
3-4 eye inches
H4198
20.0. 1905 1937. 1932
20.5. 1951. 1995. 1983
21.0. 2009. 2026. 1990 these 5 3". Plus 2 @20.5
H322
23.0. 1959 2045. 2050. 2 touching
23.5. 1973. 2090. 2095 2 under an inch
24.0. 2077. 2103. 2049
There are 2 possibilities for having such a wide swing in this set and the last,
A. I have another very touchy case sensitive rifle or,
B. The SRP is that different from the #41.
All the brass would have ejected into a 15 gal wash tub with 20 of the 30 in a 5gallon bucket.
10x has a book Max of 25.5 with a Speer 130 SP. It showed some flattening of the primer but they still have round shoulders.
Hogdon only lists data for 4198 and 322 up to 115 gr bullets so these 2 are no man's land for data here. 4198 is slow/low pressure enough to be able to sneak up on it. There is a link above to a spread sheet from a reloading program that gave me a guide to go by, thanks to RD. It also is held to 42kpsi for the SAMMI chamber. These showed no hint of high pressures ejecting at 2:00 and locking open on the empty mag. Where the velocity is close the hits were very close but the low or high went wide. All 30 rounds did manage to stay inside 9" at 100 m.
I moved out to 110 yd in hopes of saving the plate some
I was mistaken..... I wish I had the fortitude or financial well being to check the impact speeds.........
These 30 will get decapped, annealed, 80% sized and weigh lotted. Then the lots will move on up with 4198 and 322.
Just a Red neck,White boy, Blue blood American.....