24 November 2021, 09:46
MADDOG300 RUM & H870
Anyone using H 870 In their 300 RUM? Looking for loads w/200 or 210 gr bullets.
18 February 2022, 04:12
cal30 1906Maddog
If my memory is correct my uncle used 108?? Grains of H870. As slow as that powder is I don't think you could get enough in the case to cause an overload. Every cartridge I have used it in was a compressed load that I can remember.
Scott
19 February 2022, 15:09
cal30 1906Maddog
Did you find the data for this? I can comb through my books and see if I have anything.
23 February 2022, 04:29
Canadian reloarderDone a short test with it in my 300 RUM with the 200 Nosler Part. Worked up to 105 grs H-870 in a Rem case with a Fed 215 with an OAL of 3.640. Accuracy was sub-moa and velocity was 3140 ft/sec. Also tried the same load with the 190 gr Hornady SBT Vel was 3172 ft/sec but accuracy was bad.
23 March 2022, 07:30
BuglemintodayThat's great news on the 200gr partition with the h870, Canadian.
I'm going to try that in my rem 700.