QuickLoad Data for 300 WSM 175 LRX loads in Shorter Barrels?

[CoolhandLuchs]

I've been looking over data here for a while, and there seems to be quite a bit for the 300 WSM, but mostly 24" barrels. I built up a new elk rifle, but with a 20" barrel that I'm planning on running suppressed, once I overcome my analysis paralysis and things become more available. I've been starting load development with StaBall 6.5, but am wondering what choices there are for clean burning loads in shorter barrels? (trying to keep as much carbon out of the can as possible)

There are a lot of rabbit-holes out there, and I'd like to avoid as many as I can, and I'm hoping some QL data might steer me in the right direction.

Been looking at powders like:
StaBall 6.5
H4350
VV N555
RL 16 (can't find any)

Specs:
300 WSM | 3.2" Action Length | 20" Barrel Length
Barnes 175 LRX
ADG Brass
COAL: 3.10

Looking for:
Temperature stable (Colorado has wild temp swings in the fall)
100% Burn Rate/Clean Burning Powder in a short barrel
Goal of 3000 FPS, likely ambitious, but hey, why not?

Thanks for any advice or data you can give me!

 

[JaimeAdams]

In my opinion for 300 WSM with 20 barrel, you can try powders like StaBall 6.5, H4350 and VV N555 for clean performance and temperature stability. Here is my suggestion, hope it helps you.

smash karts​

 

[CoolhandLuchs]

Thanks @JaimeAdams, that's the plan. I managed to snag a couple pounds of N555 and even a pound of RL16 from Midway. I'll try those, if UPS ever delivers the order. I currently have a test set up with StaBall 6.5, but I don't think I'll have time to really dig into it before the season starts.

I did manage to do some testing with H4350 and the 175 LRX in the area I'll be hunting (7600' altitude). There appears to be some promise with H4350 in the short barrel: 65.7 grains gave a 3 shot average of 3025 FPS with an SD of 1.1 and an ES of 2.0, definitely worth another look. No signs of pressure, and in my previous ladder I didn't hit pressure signs until 67 grains. Keep in mind, I'm loading a COAL of 3.10" vs SAAMI max of 2.86" and my rifle has a lot of free-bore. These loads are likely over-pressure in a standard chamber.