junkyarddog
Member
- Joined
- Feb 26, 2010
- Messages
- 11
Hi All,
I'm developing 38 Special loads for a 586 6" using HP38, Berry's 125 grain HP, mixed brass, and MagTech small pistol primers at 1.470 OAL. When I fired the 7th shot, it was quieter and softer. The bullet stopped about 1.5 inches before exiting the barrel. This was supposedly a 4.3 grain charge. A couple of weeks ago, I started at 4.1 grains and found the tightest groups around 4.3 or 4.4 grains. This trip was to zero it in.
The casing from the round that got stuck was sooty at the mouth. What caught my attention was the forcing cone and the front of the cylinder for this round was a yellow brown color. There was another case that had a few yellow brown colored specks of unburnt powder. This is a first for me; everything else was black. Has anyone seen this before?
My first thought was I undercharged. I use a Frankfort Arsenal digital scale. It is sensitive to temperature and battery level. If it gets into the low 50s or the battery isn't new, it can drift and not zero properly. A new scale is on top of my list.
But the yelow brown color is making me think. I remember reading a post about faulty primers that yielded yellow brown resdue, but it wasn't MagTech though. I doubt it's the powder. I've shot about 20 MagTech SP primers ( I had mostly Winchesters last time).
What do you think?
I'm developing 38 Special loads for a 586 6" using HP38, Berry's 125 grain HP, mixed brass, and MagTech small pistol primers at 1.470 OAL. When I fired the 7th shot, it was quieter and softer. The bullet stopped about 1.5 inches before exiting the barrel. This was supposedly a 4.3 grain charge. A couple of weeks ago, I started at 4.1 grains and found the tightest groups around 4.3 or 4.4 grains. This trip was to zero it in.
The casing from the round that got stuck was sooty at the mouth. What caught my attention was the forcing cone and the front of the cylinder for this round was a yellow brown color. There was another case that had a few yellow brown colored specks of unburnt powder. This is a first for me; everything else was black. Has anyone seen this before?
My first thought was I undercharged. I use a Frankfort Arsenal digital scale. It is sensitive to temperature and battery level. If it gets into the low 50s or the battery isn't new, it can drift and not zero properly. A new scale is on top of my list.
But the yelow brown color is making me think. I remember reading a post about faulty primers that yielded yellow brown resdue, but it wasn't MagTech though. I doubt it's the powder. I've shot about 20 MagTech SP primers ( I had mostly Winchesters last time).
What do you think?