02-19-2012, 08:55 PM
I have not tried H322. I don't know why you shouldn't be able to use it. With sub-sonic loads you need to start at a mild to weak standard load and work down. If you start low and work up, you risk getting bullets stuck- don't ask me how I know this.
I use 7.62 x 39 brass because the reduced capacity increases load density thus helping burn consistency. If you don't have any you should still be OK with the 160 grn projs as they extend deep into the case. I've actually started using non-fireformed 7.62 brass recently. Not only does it improve load density even further but it also fire forms the brass for other loads I use for hunting.
If you use Grendel brass I would consider drilling the flash hole out and dedicating that brass to subs. This is another advantage to 7.62 brass as it uses a LR primer and has a much larger flash hole.
Accuracy has been decent- 1-2 inches at 100.
Good luck!
I use 7.62 x 39 brass because the reduced capacity increases load density thus helping burn consistency. If you don't have any you should still be OK with the 160 grn projs as they extend deep into the case. I've actually started using non-fireformed 7.62 brass recently. Not only does it improve load density even further but it also fire forms the brass for other loads I use for hunting.
If you use Grendel brass I would consider drilling the flash hole out and dedicating that brass to subs. This is another advantage to 7.62 brass as it uses a LR primer and has a much larger flash hole.
Accuracy has been decent- 1-2 inches at 100.
Good luck!