Hornady 190 CX/ .300 PRC

[Turbo2160]

Well the 190's worked amazing this year. Still no bullets recovered to get a weight from them. Two moose"both over 500 yards" and 1 white tall at 750 yards. The exit wound on the white tail was supper impressive " see pic". Looking forward to see how they perform on elk next month

 

[HarlowBocker]

I got excellent velocity without pressure signs using H1000 with the 190 CX out of my 24" 1:9 twist Proof, but the accuracy wasn't there in my rifle. I hit 3,150fps at 79.5gr H1000, Hornady brass, 3.660" OAL, and WLRM primers. I stopped at 79.5 gr because I was making velocity much sooner than the free Hornady load data suggests (link below). I would definitely start low with H1000 and work up. My barrel did not like H1000, but it is definitely worth trying for those starting load development with the 190 CX in 300 PRC.

N568 shot better, but was slower (3,012) and I ran out of case capacity. I'll try Retumbo, hopefully I'll get velocity and accuracy. Have a good one!

https://static.hornady.media/site/hornady/files/load-data/300-prc-190gr-cx.pdf

 

[HarlowBocker]

Last weekend I gave the 190 CX another try with H1000 and Retumbo. I wasn't sure if I'd started with a clean bore the first time I tried H1000/CX bullets (~3 years ago), so I figured I'd give it another shot since it produced good velocity before.

24" Proof CF 1 in 9" twist SAAMI chamber
New Lapua brass (ran through an expander mandrel)
215m primers
longer OAL of ~3.700" and .015 jump.

3134fps ES 22 SD 9 (5 shots) at 82gr H1000 (Hornady shows 82.6gr max)
3106fps ES 22 SD 10 (5 shots) at 82.5gr Retumbo

No pressure signs with either.

I have more H1000, so I'm going to use it for now. Accuracy was similar (~.75moa) with both. I wonder if my initial tests were fouled by mixing cup and core bullets into my shooting sessions. Accuracy with H1000 was better this time.

Other bullets shoot better in my rifle, but this is good enough for me to try on game. I'll plan to shoot a few critters with it this year and see how they perform. I have some 185 Berger Hybrids collecting dust, which have a very similar bc. I'll load/shoot them up as practice ammo.