Hornady 190 CX/ .300 PRC

[cornchuck]

Has anybody loaded the Hornady 190 gr. CX for the .300 PRC yet? I'm just curious as what powder was used. I have tried the 190 LRX from Barnes, but right now I am not too happy with I have come up with.

Christensen Arms Mesa .300PRC
1:8 twist

Jason

 

[OG-danimal]

Any update with the 190cx and 300prc??

 

[Seabeeken]

The hornady GMX was the only mono bullet I ever had that did not expand. Fired from my 280ai at about 80 yds on a white tail deer. Same size hole exiting as the entrance. Wont touch another. Went to Barnes and found the rifle didnt like the LRX but was fine with TSX, shooting .5"

 

[Wachsmann]

Just seen where Ron Spomer and Backfire TV host showed if shooting mono bullets (all copper) you need to clean to bare metal in the rifle before shooting the mono's if you been shooting copper jacket lead bullets. They had some interesting results with group size. Made me think how bad my 6.5 Creed shot some 127LRX bullets that I may give another try after a bare metal cleaning on the rifle.

 

[skma]

any updated info? i have some loaded with win 760 powder as was testing up with 190gr speer impacts
just need to check groups with the cx

 

[Turbo2160]

Doesn't seam like to many people are trying this combo out.. I'm just waiting on a new hell canyon barrel to show up. Should be here in the next few month "ordered in January" I will be trying the 180 and 190 out. 28"finished 1:9 twist
Trying N570,N560,N565,N565,H1000,Retumbo and IMR 7828..

 

[adk hunter]

I've been shooting the factory ammo as back up for my hand loads with another pill. The factory stuff is unbelievably accurate at 300 yards two on top of each other less than an inch away. I wish there were more first hand experiences on elk performance!!

 

[88acres]

I just loaded 20 rnds of the 190 CX's for my Christensen 300 PRC MPR. I went with N565 and RL 26 FED 215's Lapua brass as thats what I have on hand. Im shooting suppressed FYI.

I went to the range today and only shot two of the RL loads and one of the N565 in each ladder and got an ejector mark… I started with working in .4 gr backward from max for each powder and obviously shot the lowest charge weight first. I seated them to what Hornady had for COL which was about .085 off the lands in my rifle. This seating depth you could not see the cannelure grooves at all.

So, I stopped. And decided to pull and reseat these to approx .030 off. Case fill even at the lower charge was heafty not uncommon for the 300 PRC. I am assuming that seating that deep reducing the case area caused the pressure. I know seating closer to the lands is more common for pressure spikes but this is my first experience where I have encountered pressure with a deeper in case seating depth.

New to monolithic bullets but going on a Nilgai hunt and want the added penetration. Anyone have any experience or advice here with these mono's? I know the 190 CX was designed for the PRC so not sure what to think.

Thanks in adavnce.

 

[skma]

well h4831sc was the winner with the hornady 190 cx's fed 215m primer hornady brass, just over 3100 and 3 shots covered by a canadain dime. i did buy box of adg brass might load some up, but horn brass doing good at the moment

 

[88acres]

H4831SC is hammering in my 7PRC with 175 ELDX.

 

[88acres]

So 190 CX update, that was my issue FYI. Seated too deep… I seated out to .040 off no pressure with N565 until 80gr slight ejector mark. RL 26 5 shots and started to get ejector mark and clickers. Going to load five at two different nodes with N565 3,054fps and 3,089 fps.

 

[Turbo2160]

Hey every one sorry this took so long but im still not done all the powder testing that i was hoping to get done by now. With only have the gun being finished late last month and lack of time this is what I have come up with so far.
Kauger Elite Long action
L/A hunter bottom metal
L/A hunter mag
Trigger tech special
Area 419 3 port
Manners Long Range Hunter
28" JCcustom 1 in 9 twist 6 grove sendero

190gr CX
Lapua Brass
Fed 215 primer
CBTO 3.002 for a 30 tho jump

All testing was done with a 30 tho jump at 200 yards " pics to fallow"

N565 " no targer"
1-77gr-3049 fps
2-77.5gr- 3089 fps
3-80 gr - 3090 fps -Pressure" ejector & hard bolt lift"

N568
1-77 gr -2827FPS
2-77.5gr- 2854FPS
3-78 gr- 2848FPS
4-78.5gr- 2887FPS
5-79gr- 2892FPS
6-79.5gr- 2895FPS
7-80 gr- 2924FPS
8-80.5gr- 2933FPS
9-81gr- 2916FPS
10-81.5- 2957FPS
ran out of N568

Retumbo
1-77gr-2939FPS
2-77.5- 2972FPS
3-78gr- 2987FPS
4-78.5gr- 2988FPS
5-79gr- 3034FPSFPS
7-79.5gr- 3071FPS
8-80gr- 3062FPS
9-80.5gr - 3115FPS "ejector mark"
10-81gr- 3115 FPS "Pressure" ejector & hard bolt lift"

Pictures to fallow

 

[Turbo2160]

Her at the two targets

 

[Turbo2160]

After all the testing i chose to look into the retumbo a little more. chose to break down the 79gr,79.3gr,79.5 gr and shoot the, at 500 yards with both the 30 tho and 70 tho off the lands

30 tho jump

79gr- ave-3015FPS ES. 17 Sd.8.5
79.3 gr - ave 3044 ES 13 sd 7.5
79.5gr - ave 3059 es16 sd 6

70 tho jump
79gr- ave-3015FPS ES. 15 SD.7.4
79.3 gr - ave 3045 ES 10 SD 5.1
79.5gr - ave 3060 ES18 SD 9

Pic to come