300 wsm powder

[jrebel]

Curious what people use for 300wsm powder pushing 180 grain pills.  I was surprised by the choices the book gives and just curious what others have had luck with.  I have h4350, h4831, h414 (book recommends). 

Thanks.

[Ghost Hunter]

I started off with Magpro and had great results.  Had family pickup 8 pounds in Montana. Haven't got any now. 

[Jonathan_S]

H4831sc for 185s, 7828 worked well too and very consistent speeds with the 215s but was hitting too much pressure at low speeds.

Switching to H4350 when I rebarrel.

[Wetwoodshunter]

Currently using Reloader 23 with 181gr hammer hunters in my .300 wsm

181 gr hammer hunters, reloader 23 .300 WSM
https://hunting-washington.com/smf/index.php/topic,253803.0.html

[jrebel]

I’ll be hitting the range with h4350 first.  If I don’t get the results I like I will try h4831 or h414....this powder surprised me to see but it shows promise based off the book pressures and velocities.  Very similar to hybrid 100v which is a powder that apparently works well.

[elkaholic123]

I really liked Reloader 17 in my 270 WSM

[Sakko300wsm]

Reloader 16 for 180 and 150gr nossler 300WSM

[Reidus]

180s is about the max weight I'd go with h4350. Over 180gn the slower powders will give you better velocity. H4831 works really well with the heavier bullets in the wsm. Haven't tried it with lighter bullets. H4350 should work great.

[Magnum_Willys]

Given the great results reported with 215 Bergers why are you using 180’s?   I know you need a long action for 215’s/ 210’s and this might be the reason.   Thinking about a 300 wsm build and wondering. 

[hogslayer]

For what you have H4350 with Fed 210 or cci 200/BR2.  I have a XM action and with 210’s shoot RL23 and BR2’s.  3.150. 

[jrebel]

Given the great results reported with 215 Bergers why are you using 180’s?   I know you need a longvaction for 215’s and this mat be the reason.   Thinking about a 300 wsm build and wondering.

The rifle I’m loading for won’t accept long bullets due to the magazine.  It is also my sons rifle so 180s are perfect.  He took his first mule deer with it this year at 308 yards.   It is a savage ultralite and the magazine is definitely a limiting factor.   

My 300 win mag shoots 212 super well so we will keep that rifle running heavies.  Variety is the spice of life. 

I am super impressed with how well the savage shoots factor nosler 180 grain accubonds.  I’m sure I can make it shoot even better with the same bullet.  It should be a super accurate rifle for my son with the hand loads I’m working on. 

[actionshooter]

I really liked Reloader 17 in my 270 WSM

Play with it in the summer and winter... In my experience RL17 is EXTREMELY temperature sensitive... like 1.5fps per degree.

[jrebel]

I really liked Reloader 17 in my 270 WSM

Play with it in the summer and winter... In my experience RL17 is EXTREMELY temperature sensitive... like 1.5fps per degree.

That’s what I found and had dangerous pressure signs offer working a load in the winter and shooting it in the summer.  Sold the 8lbs I had and won’t use it again.

[Karl Blanchard]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

[Caseknife]

RL-19 at about max behind 180 TSX's worked well in my Kimber Montana at 2.78", but that was 12 years ago when I loaded them.  It really likes 130 TTSX bullets also.  I am not a long range hunter so I don't really care about the BC and the lighter bullets have quite a bit less recoil.

[Magnum_Willys]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

How fast can you push the 215’s ?   2850 ?   Yours is throated long on a tikka action if I recall. 

[Karl Blanchard]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

How fast can you push the 215’s ?   2850 ?   Yours is throated long on a tikka action if I recall.

modified rem 700 SA. With n565 i hit pressure at 2,970. H4831sc was 2,930. 2,885 seems to just be the sweet spot for that gun with both so thats where I've left it. 

[b23]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

How fast can you push the 215’s ?   2850 ?   Yours is throated long on a tikka action if I recall.

modified rem 700 SA. With n565 i hit pressure at 2,970. H4831sc was 2,930. 2,885 seems to just be the sweet spot for that gun with both so thats where I've left it.

The new N568 that is coming out, whenever that is  , with the heavies in your WSM should give you a nice boost above what you're getting with either of those.

[Karl Blanchard]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

How fast can you push the 215’s ?   2850 ?   Yours is throated long on a tikka action if I recall.

modified rem 700 SA. With n565 i hit pressure at 2,970. H4831sc was 2,930. 2,885 seems to just be the sweet spot for that gun with both so thats where I've left it.

The new N568 that is coming out, whenever that is  , with the heavies in your WSM should give you a nice boost above what you're getting with either of those.

im highly doubtful of that. You can only fit so much powder in a wsm case.

[b23]

17,19,22,26 are all temp sensitive. Ive burned 40 or so pounds of h4831sc in my wsm's and its really been the ticket. Recently been playing with 215 and 230 bergers with Viht n565 and it has also been performing well.

How fast can you push the 215’s ?   2850 ?   Yours is throated long on a tikka action if I recall.

modified rem 700 SA. With n565 i hit pressure at 2,970. H4831sc was 2,930. 2,885 seems to just be the sweet spot for that gun with both so thats where I've left it.

The new N568 that is coming out, whenever that is  , with the heavies in your WSM should give you a nice boost above what you're getting with either of those.

im highly doubtful of that. You can only fit so much powder in a wsm case.

Maybe but the new N568 is a SC powder and if it's something like N570 but in SC form, with the 230's particularly, it could do well in the WSM's that are able to run a OAL around 3.200

[jrebel]

Starting working with H4350 today.  I loaded in 0.2 grain increments to find a node.  Shot one factory round first to reference the velocity and then the other rounds with time for the barrel to cool in between.  It was 33 degrees outside so I only gave it a few minutes between shots and think I got pretty outstanding results. 

Beginning load 62 grains to max load of 64 grains of H4350. 
200 yards to target
Lab radar for chronograph

Hopefully the data shows up.  I will also post a picture of the target.  Amazingly all but all rounds shot well up to 63.4 grains, then it opened up and shot right. 

I will work with 63.0 grains and start playing with seating depth.  With that said, it shot 1/2 MOA at current seating depth so may just take it out to 300 and 400 yards and see how it performs.  I'm perfectly OK with the speed being where it is, especially with a powder that is very temp stable and reliable. 

[Magnum_Willys]

Bullet?

[jrebel]

Bullet?

180 grain accubond. 

[CaNINE]

You have some consistent combustion going on around 63 grains. Time to run a seating depth study to tune your harmonics.  Very promising.

[Magnum_Willys]

What a classic ladder - those 300 wsm's and 4350 are well behaved.  62.8 looks like a winner!