Home Forums Reloading Big Game Rifles 300 win mag load

I wish I knew. I'm pretty new to the Barnes bullet craze. I tried some of the old ones and they left a bad taste in my mouth. Copper fouled the barrel very badly, so I swore them off. Now the new ones have the grooves and I have not seen any copper fouling issues. I loaded up the 175's and was all prepared to use them on my elk hunt. I packed the rifle around all season and did not get a shot (2020). Then I did the same thing last year and packed the heavy pre 64 around again up until the second to last day. On the last day I said screw it and took the Tikka 7MM08 stainless lite, which is 2 pounds lighter and much easier to pack. Needless to say I shot a bull with the 140gr TTSX from that rifle. Good results, complete pass through and 1 shot kill. Pretty much planted the bull on the spot. Now, I put a different stock on the old 300WBY and it weighs 8 pounds scoped:



Before in the wood stock:


The 175 is supposed to open up at a lower velocity and does have a higher bc. Probably a moot point, as we know most elk are shot within 400 yards anyway. That particular load puts them into 2" at 400 yards.. Rifle shoots almost as well as my semi custom pre 64 338wm in the similar PoundR stock.. I look forward to hearing how your 300wm shoots. For the longest time, that is all I used.. But like I said in an earlier post, eventually after tying everything under the sun, I settled on the 200gr Nosler partition at 2,900fps.. Good luck with the wm, it's a great cartridge..

4831 sc since it is on the menu...

myself, when I use a 300 Win Mag, I load it up like an ass kicking 300 Win Mag, otherwise the 06 will work just fine..

82 grains of H 1000, 220 grain RN or 220 gr Nosler SMP partition...

I wonder if this load isn't stout enough to stop a locomotive.....

Thanks BSA, I've carried a 308 win mostly during elk season but trying the 300 win mag out for a bit. Taken a 7mm08 as well but still waiting to connect with it. Think its cursed? I'll post back when I get the rifle out to the range. Good hunting.

Seafire, that load sounds like it would....the twist in the sako is probably to fast for much above 200? Time will tell though.

In my Magnum Research Mountain Eagle, I'm using a max book load (Nosler guide) of H4831sc under a 200g Nosler Accubond. Worked like a charm for my 6x6 bull. If I had to go with copper I'd probably use 168ttsx or 175lrx.

The OP is asking for Barnes 168TTSX with H4350, which is not listed in the Barnes load data you referenced.

The OP will need to reference other loading manuals which list H4350 with different projectiles and make an educated decision.

OP, I would try the H4350 first with 168s.

That is probably why I gave him this piece of advice:

It's stupid to use other bullet manufacture's load data, just because the bullet you're using does not list that powder. Especially when considering the Barnes mono metal because pressures are different with that than compared to a C&C or other premium lead jacked controlled expansion bullet. You suggest using Nosler load data. Again, not a good idea. What you are suggesting is unsafe load practices. If it were me, I'd contact Barnes with a simple email and ask if they have any data they can share with the powder the op is asking about (H4350). It is very possible that they do. Again, there are many powders they do list in their load data. I'd focus on the ones they list. IMR4350, H4831 and the RL's I posted.

Referencing multiple loading manuals and making an educated decision is never a stupid idea.

I didn’t suggest any of the max load manual data be treated as gospel.

Let’s compare the three manuals in question with IMR4350:

Barnes, 65.1 start, 72.4 max
Hornady, 58.1 start, 69.8 max
Nosler, 68.0 start, 72.0 max
Interesting that Barnes is the hottest of the three…..
Also interesting both Hornady and Nosler have monolithic projectiles referenced with their data…..

Now the H4350 data:
Hornady, 58.3 start, 71.4 max
Nosler, 69.0 start, 73.0 max

We can make an educated decision on where to start with H4350. Considering Hornady’s and Nosler’s delta between IMR 4350 and H4350 start and max charge weights are so close, I would feel comfortable starting with 66 grains H4350 and working up to Barnes’ IMR max velocity of ~3,150 from a 24”.

I can easily get 3300 FPS with R22 under a 168 gr TTSX in my 300 Weatherby. This combo is hell on deer sized critters.

3150 - 3200 should be a piece of cake in the 300 Win Mag.

The only advice I have is stick with bullets less than 180gr in 10 twist Bartlein barrels. A 168gr ttsx bullet pushed hard, seated short are very accurate. And over 180gr bullets in 8 twist barrels.

I've had plenty of 1 in 10" twist barrels spin 200 and 220gr and even 250's if you want to really get technical. As others know, your advice about barrel twist is a wee bit skewed..

Huh?

H4350 and 168g TTSX have given me ~3200fps and MOA accuracy.

Nice! I will start with 168 ttsx and found a box of 175 LRX. Buddy came up with a lb of R22 for me to try. Still need to order dies and brass.