Thread: Hornady sub-x 175gr load data...

Finally got up to the range to try these little critters out, loaded up 5 at 10.0gr Trailboss with Win .308 cases and CCI LR primers. Seated to the cannelure groove, crimped with a Lee Factory Crimp die.

One whoops on loading, see the pic on the "what have you reloaded today thread" which was all my fault - using the Hornady seating die with the long blunt bullets seated deep requires a bit more adjustment than you'd expect and the die just got to the cannelure with one little bit more to push in and the press cammed over. As I said, whoops... Bits recovered and reused so only cost was a case.

On to performance - 10.0gr was just supersonic but very reliable rounds with very consistent performance out of the 5 I loaded up to try. No sign of stability issues (1-10" twist), and speed close to 1100fps. Suitably quiet but not subsonic, just over. Grouping with the Magnetospeed fitted was low by 5" and 1" right, 3/4" group. With the suppressor fitted and the magnetospeed off, dead center and 7" low which correlates with the 400yd drop line on 6 power with my scope. Grouping was roughly 1/2" (would have been 3 shots touching but I shanked the last shot slightly).

All in all very acceptable performance, and I think my sweet spot will be in the 9.0gr of Trailboss area.

Interestingly the rifle performed well with supersonic ammo out to 200m, testing drop out at 300m created a hell of a lot of confusion finally locating the rounds down about 24" below aim point. If it wasn't for the performance with the trial batch of subs I'd be second guessing myself - I think the weather turning to crap between the initial shorter ranges and the later, longer range might have not helped, a stiff swirling head wind came to play.