05-09-2020, 12:33 AM
1Shot Wrote:One thing about the 120 Gold Dot that I discovered in my case is that Speers load data for it is WAY TOO conservative. I am using IMR 8208 and a bit more than what Speer list as max and I load at a COAL longer. The COAL is too long to work through Elander mags but works fine through ASC/ArStoner mags. In MY 20" BCA barrel which the 120 GD is dedicated as THE hunting bullet I get average 2550 fps with sub MOA accuracy.
Thanks 1Shot. I have done a little work with them(GD 120's) as time and weather allows. I'm using H335 because ArComp was scarce around here, and I use it for my dedicated hunting loads(123 SST). I thought maybe the H335 would be a little bit more available,,,doesn't look that way now.
So, yeah the speer data is on the conservative/liability end of the spectrum. At 28.0 (H335) my 18" bbl got 2502fps on the one round I chrono'd. The group was not real good. Everything else looks ok. I'll do some more work and see what happens. It looks like the MagnetoSpeed has a significant effect on my POI, so I need to chrono a few rounds without attention to group size and see what I can find. So far, this rifle shoots 3 different 123gr bullets to very nearly the same poi, no need to adjust, and all are running 2535 to 2550fps. Thanks again for the info.