Tried shooting my 300 Blackout which has a 10.5 inch barrel, with Hornady 190 grain sub-x bullets. Had two different powders, h322 and h110. 13 grains of h322 was quite accurate but would not lock the bolt back on an empty mag. 9.6 grains h110 not so accurate compared but would not even cycle. I have other powders these are the first two I tried with this particular bullet. Anyone had much experience with this bullet in a 300 Blackout 10.5 inch barrel? Every other cartridge I tried functions perfectly. I'm not trying to be subsonic just experimenting with different bullets in case I take a wild hair and decide to deer hunt with this thing.
300 Blackout with Hornady 190 grain sub- X
- Thread starter rifle02
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I use Vihtavuori N120 and N110 for my 190 subx in 7.5, 8, 8.5 and 9" barrels with no issues, I assume it would be fine for a 10.5" barrel.
N110 and H110 look to be very similar according to the Hornady reloading app, you should be getting lockback with 9.6 of H110, I do with 8.5 of N110, may be a gas port issue you're having.
N110 and H110 look to be very similar according to the Hornady reloading app, you should be getting lockback with 9.6 of H110, I do with 8.5 of N110, may be a gas port issue you're having.
Here is the Hornady data for that bullet.
I use 10.5 in N120 and 8.5 in N110 for 190 subx.
I dont have my data handy right now but I use h110 and the 190 SubX. Works great in my 10.5. That's become my hog trap dispatch load.
If I remember right my buffer is H3. No problems with all my loads with lighter bullets. I may try the CFE BLK. And while I'm at it I guess I'll try the h4198. Thanks for the input.
