Ysterhout Dot Net
The added priming charge did not noticably increase pressure, according to the bolt lift.
One load of BMG powder was tested only, as this was a proof of concept. As a proof of concept, it was successful, as a viable mechanism it needs to be tested for repeatability.
This test will prove successful to me if I can get 100 rounds with no misfires, at which point I will switch to large rifle primers in my BMG brass, until BMG primers manifest back into existence.
In my rifle, when the load gets towards 2750 fps with the CCI primers, the bolt needs a slight bit of persuasion to open. This velocity with large rifle primers should have given me that heavier bolt lift. It appears that the smaller primer has flattened and lengthened the pressure curve, without giving up velocity. Which is what a proper BMG powder should be doing in the first place.
There is unfortunately no powder that can give 100% case fill in a BMG case, without causing problems due to excessive pressure in sporting guns.
Accuracy and felt recoil with this ... I'm not sure yet, from the 12 rounds in this test, it felt like there was less of a thump with the Large Rifle primer, and it seemed like the accuracy was a bit better. Further testing will confirm.
Velocity variation was a lot less, surprisingly, with the large rifle primer, compared to the same powder over the CCI 35. I'll gather more data during the further tests to confirm or refute that.
