Hornady CX 190 gr 30 cal

[Ftothfadd]

Thank you. I found the handloading info indeed. I misunderstood you, thinking hornady loads the 190 cx in factory 300 wby ammo.
Thank you regardless!

 

[Peter.Kansas]

Finally got some intial data for some RL 26 / 190CX vs 190LRX
I loaded 79gr of RL26, Fed215 primers with both loads .100 of the lands.

190CX @3118, 3885 ft,lb
190CX @3134, 3925 ft,lb
190CX @3114, 3875 ft,lb

190LRX@3173, 4023 ft,lb
190LRX@3138, 3935 ft,lb
190LRX@3190, 4066 ft,lb,

Using Shooters Calculators.com the following data was developed:

For the 190CX with an average velocity of 3120FPS, zeroed at 300yards sighted at 3.11 inches at 100yards energy would be 3717/ 2968 FPS
300 yards would be 3031 energy/ 2680FPS. At 400 yards energy2728/2543 FPS/ bullet drop - 8.54

For the 190LRX with an average velocity of 3150 FPS zeroed at 300 yards sighted at 3.06 inches at 100 yards energy would be 3766/ 2988 FPS
300 yards would be 3033 energy/ 2681 FPS. At 400 yards energy 2712/ 2535FPS/ bullet drop 8.53

What's interesting is that even though the LRX showed an increased average velocity both bullets show almost identical performance at the
400 yard range. Bullet drop -8.54 vs -8.53// energy 2728 vs 2712// FPS 2543 vs 2535.

Accuracy for both was around 1.25 with the CX being a little better.

Overall I would say using the RL 26 powder with either of these bullets would be an awesome hunting load. I think some would say this data would be what you expect from a 300 Weatherby. Lastly all of this comes from the Ballistic Coefficients of these high performance copper bullets IE
CX @ .575// LRX @.541.

Good information, thank you. I'm also getting a two hole touching and one an inch away on a three shot group Consistency regardless of powder charge or powder. Gave up trying to ferret it out.

 

[Pizza Box]

Hornady has now released data for the 190grain CX with the 300WinMag and 300WBY. Interesting to note the suggested COAL for the 300 WM is 3.500 which will be to long to feed in many actions. If your rifle is a magazine type feed your probably okay. Hornady also recommends 20 to 30 of the lands which will not work for some actions. Overall good to see some info for the new CX bullets. I will be loading the 190 in both the WM and WBY

Loading the 190cx to 3.492 which is .010 off the lands in my New Haven M70 .300WM. Throwing 75gr of H1000 which is producing half MOA groups at just under 2900fps. ES ranges from 20 to 30fps depending on Temps. I Followed the 190CX Hornady Manual update for RL26 as burn rates are near identical to H1000 and my velocities are on par with what's listed (Max Load) and No pressure signs. I'm confident hunting out to 600yds with only 3 MIL elevation adjustment from a 200yd zero.