cowboywhorses
Well-Known Member
Found this is the one I may go with and then throat to my needs. Hope this helps.
.375/.338 Lapua Magnum Improved - Load Data
- Thread starter Rockfish Dave
- Start date
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Pat McLaughlin
Member
Anybody still shooting this round sure could use starting loads for 350 grain MK I,ve worked up to 97 gr of H4831 with good results. Just looking for different powders and a place to start.
Thanks Pat
Pat McLaughlin
Member
Anybody out there still shooting this
Rockfish Dave
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I am updating this post with the pictures since Photobucket is no longer allowing them to be viewed.
After a hiatus I plan on picking this project back up again. In the process of hydroforming brass after neck expanding... not so good results. The die only was able to form it about 50%. Just annealed the brass again in hopes of better results for the hydroforming.
After a hiatus I plan on picking this project back up again. In the process of hydroforming brass after neck expanding... not so good results. The die only was able to form it about 50%. Just annealed the brass again in hopes of better results for the hydroforming.
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Rockfish Dave
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Rockfish Dave
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backyardsniper
Well-Known Member
I'm tagging in on this. I just picked up a switch lug and I have a 338 Lapua AI barrel for it and a 300 Norma. I was considering purchasing a 300 win bolt so I could get a H&H barrel spun up but then I thought since I've got a bunch of 338 lapua brass anyway why not go this route. I bet this rig would be perfect for Cape buffalo or Bear. Plenty of horsepower to drive a 350gr soft or solid, not to mention being able to run the SMK and such for longer range hunting applications. Elk, plains game. My rifle is a lone peak fusion ti. Running badger dbm CIP length. Manners EH1. Do any of.you guys that run these see anything there that wouldn't be compatible with this cartridge?
Marine sniper
Well-Known Member
Hydro forming is a waste of time- measure you case capacity before and after and you will see why.
Rockfish Dave
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Kind of a broad statement there.
I have, and do use hydroforming for other calibers with excellent results. I am only having trouble with this case. I suspect the combination of thicker brass and large case capacity are reducing the effectiveness.
In the other cases (6.5 SLR Improved, and 284 Shehane) I am getting virtually identical H20 capacity between hydroformed and fire formed cases.
Marine sniper
Well-Known Member
Fair; I used it in 338 Lapua to 338 Lapua AI and gained nothing.
On another note I am building a 375 Lapua improved; plan on shooting 350 SMK / 411 HH / 300 TTSX. 26 in barrel. Have you done any more testing? Any tips of guidance? I plan on using a 40* shoulder, rifle with scope will be right around 11 pounds. Defiance Anti action, etc.
Rockfish Dave
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Loaded and just need to set aside time to go to the ranch... Will post up when I do.
Marine sniper
Well-Known Member
Had a chance to shoot those loads?
kfreeze
Well-Known Member
Bringing this one from the dead again. I was thinking of this to take to Africa. Any updates from you all?
What are you hunting and where? When I went 270 was the preferred plains game round with 300wm for kudu and gemsbuck oryx. Ammo is expensive there so the guides love the additional tip of my leftover rounds.
