I have an AR15 in 7.62X39 with a 1:10 twist barrel. I have been kicking around the idea of playing with subsonic loads with it just for fun. I have googled it a bunch and have come up with a handful of possible loads, but I wanted to pick the brains of the members here first.
I am looking at using a 200 grain sierra SPBT loaded backwards into the case to help with stabilization (intent is to eventually start casting my own 180-220 grain soft lead alloy bullets and I understand lead bullets naturally lubricate the barrel more than jacketed and there are other benefits with lead when loading light as compared to jacketed). I have read about using Red Dot powder and drilling the primer flash holes out to 9/64" to aid in an even primer flash and reduce the chance of detonation from the primer flash going past the powder charge and igniting the powder from both ends.
I was wondering if anyone with QuickLoad or similar software could run some numbers for me. I plan to use a CCI LRP, winchester brass, sierra game king 200 grain SPBT, OAL 2.200, and 6.0 grains Red Dot.
I don't know if and don't think this will cycle the action of an AR15, but it would be neat to see. But I also don't want to blow myself up trying this. Red Dot is a high volume powder so I think even a 5.0 grain charge would still be safe, but this is where I need load software to test the percentage of load volume in this case with this bullet and powder.
Amy help of insight will be much appreciated.
Thanks,
Alex
I am looking at using a 200 grain sierra SPBT loaded backwards into the case to help with stabilization (intent is to eventually start casting my own 180-220 grain soft lead alloy bullets and I understand lead bullets naturally lubricate the barrel more than jacketed and there are other benefits with lead when loading light as compared to jacketed). I have read about using Red Dot powder and drilling the primer flash holes out to 9/64" to aid in an even primer flash and reduce the chance of detonation from the primer flash going past the powder charge and igniting the powder from both ends.
I was wondering if anyone with QuickLoad or similar software could run some numbers for me. I plan to use a CCI LRP, winchester brass, sierra game king 200 grain SPBT, OAL 2.200, and 6.0 grains Red Dot.
I don't know if and don't think this will cycle the action of an AR15, but it would be neat to see. But I also don't want to blow myself up trying this. Red Dot is a high volume powder so I think even a 5.0 grain charge would still be safe, but this is where I need load software to test the percentage of load volume in this case with this bullet and powder.
Amy help of insight will be much appreciated.
Thanks,
Alex