H4350 for 300WSM. Anything better?

S

Shankedit

Member
Joined
Jun 19, 2024
Messages
17
Location
Tennessee
I have a 300WSM on a Tikka action throated for the Barnes 190 LRX and was wondering if there's a better powder other than H4350. I gave H4831sc a go yesterday and ran into some slight ejector wipes at 65.0 grains and only 2760fps. I'm hoping to get at least another 100fps out of that bullet and feel that's really reasonable—if not an additional 200fps. I'm using ADG brass.
I have no issue using H4350 and my other 300WSM (factory chamber) shoots 175 LRXs great at around 3050fps. But I have so many other cartridges I load for that love H4350 as well and I'm just so fond of this last 8-pound jug I paid less than $300 for. Haha!
Thanks for the help.
 
Shankedit said:
I have a 300WSM on a Tikka action throated for the Barnes 190 LRX and was wondering if there's a better powder other than H4350. I gave H4831sc a go yesterday and ran into some slight ejector wipes at 65.0 grains and only 2760fps. I'm hoping to get at least another 100fps out of that bullet and feel that's really reasonable—if not an additional 200fps. I'm using ADG brass.
I have no issue using H4350 and my other 300WSM (factory chamber) shoots 175 LRXs great at around 3050fps. But I have so many other cartridges I load for that love H4350 as well and I'm just so fond of this last 8-pound jug I paid less than $300 for. Haha!
Thanks for the help.
Click to expand...
As with anything else, YMMV. I am getting 2850 FPS with 215 Berger with RL-17 out of 24" barrel.

ADDED:

Before settling with RL-17, these are the powders I used in order of precedence.

1. RL-17
2. MagPro
3. H4350
4. H4831SC
5. H1000
6. IMR 7828SSC
 
Last edited:
FEENIX said:
As with anything else, YMMV. I am getting 2850 FPS with 215 Berger out of 24" barrel.
Click to expand...
Thanks! I should've added it's a 24" Proof carbon barrel. Also should've added that I haven't tried H4350 yet, just checking to see if I should look at other powders for the 190 LRX.
 
Hybrid 100v, N560 H1000 and H4350 are all 1/2" moa with 200 grain eldx from my 22" McGowan barreled tikka. All 4 powder's velocity were 2786-2860. I really liked H1000 because it produced less pressure than the others but I went with N560 for availability at the time. Norma brass took .5-1 grain less powder than Winchester.
 
Shankedit said:
I have a 300WSM on a Tikka action throated for the Barnes 190 LRX and was wondering if there's a better powder other than H4350. I gave H4831sc a go yesterday and ran into some slight ejector wipes at 65.0 grains and only 2760fps. I'm hoping to get at least another 100fps out of that bullet and feel that's really reasonable—if not an additional 200fps. I'm using ADG brass.
I have no issue using H4350 and my other 300WSM (factory chamber) shoots 175 LRXs great at around 3050fps. But I have so many other cartridges I load for that love H4350 as well and I'm just so fond of this last 8-pound jug I paid less than $300 for. Haha!
Thanks for the help.
Click to expand...
N550 is what I settled on for 300 Mega, 208 LRHT. Tried all the powders Feenix mentioned, plus N555. N550 got me to my desired velocity, no pressure, consistent groups. IMR 7828ssc was looking promising until I had a 10⁰ swing in temp. Groups opened up on a load that I was getting excited about.
 
X'n Tex'n said:
N550 is what I settled on for 300 Mega, 208 LRHT. Tried all the powders Feenix mentioned, plus N555. N550 got me to my desired velocity, no pressure, consistent groups. IMR 7828ssc was looking promising until I had a 10⁰ swing in temp. Groups opened up on a load that I was getting excited about.
Click to expand...
VVs have some excellent powders. I have a few to try, but I was playing with powders I already have open.
 
FEENIX said:
VVs have some excellent powders. I have a few to try, but I was playing with powders I already have open.
Click to expand...
H4831 was okay. I was really hoping that it was THE ONE. I couldn't get above 2700fps, in a 18" barrel, without heavy bolt lift with the 208's and 215's. Similar issue with H4350. I also switched primers from 215M to 210M
 
X'n Tex'n said:
H4831 was okay. I was really hoping that it was THE ONE. I couldn't get above 2700fps, in a 18" barrel, without heavy bolt lift with the 208's and 215's. Similar issue with H4350. I also switched primers from 215M to 210M
Click to expand...
X'n Tex'n, so what did you settle on? Very curious on the results of your 18" load

Just for reference, I am loading 208's out of a 21" barrel and getting 2750fps with Stabal65 in cool weather but in Texas heat I would get an ejector mark after a few shots. So for a summer match in the heat I found accuracy at a reduced load and dropped to 2680fps and I can shoot all day with no pressure.

Does anyone feel I could gain more velocity by switching to H4350 over Stabal65? Ive been tinkering with the idea
James
 
Longshotjames said:
X'n Tex'n, so what did you settle on? Very curious on the results of your 18" load

Just for reference, I am loading 208's out of a 21" barrel and getting 2750fps with Stabal65 in cool weather but in Texas heat I would get an ejector mark after a few shots. So for a summer match in the heat I found accuracy at a reduced load and dropped to 2680fps and I can shoot all day with no pressure.

Does anyone feel I could gain more velocity by switching to H4350 over Stabal65? Ive been tinkering with the idea
James
Click to expand...
62.2gr N550. This is a good load for me in low 90's August temps, sea level. Room in the case. N555 filled the case, decent results but N550 was just so consistent, group and SD wise, over a broad charge range. Average 2730fps with 208s. N550 surprised me. H4350 is a little faster. I could actually feel the difference between powders in recoil and muzzle blast. Granted, I'm using an ultradyne brake. H4350 showed pressure pretty quick (2650-2700fps) in my testing. It seemed to recoil harder and muzzle blast was belligerent.
 

Similar threads

E
300wsm h4350 05 h4831
Replies
7
Views
5K
northernexposure
N
S
300wsm 190vld. H4350 or 4381sc loads?
2
Replies
15
Views
7K
Barrelnut
Barrelnut
T
Why not 180gr AB/ H4350/ 300wsm?
Replies
5
Views
7K
brentc
brentc
Lonewolf74
These worth anything?
Replies
4
Views
998
wboregon
wboregon
B
H4350 for .243?
Replies
11
Views
455
dogz
D

Recent Posts

Top