Reloading 375 H/H magnum

4fifty8

4fifty8

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Your velocity on the 270 TSX seems low. Often times TSX's need hotter loadings to get them going the correct velocity in my experience, which is really important with them. The point of running the 270 tsx is that you don't shed any weight and therefore can run at a higher velocity which not only helps ballistics, but also correct expansion. Down around 1800-2000fps impact they are marginal on performance but are really happy around 22-2500fps terminal velocity. If you're not pressure signed out I'd try for a bit more speed on this bullet personally, and if you are maybe try a faster powder as there's generally less bore friction with a TSX due to the structural integrity of the copper not upsetting itself when fired. I personally load the 300gr version with H4895 with good success, and would switch to the 270gr, but frankly I have a lot of these bullets and a fantastically accurate loading.

I'm gathering that you're going for similar point of impact through so the above comments might not be pertinent to your situation.
 
Barely related but after the bullet test on here, I reloaded 40 235 gr speer for the hunting season and fun at about 2800. I will not quartering away shoot a deer with one, but a good broadside lung or neck shot, I'm curious. Probably make food.
 
Only have a few...20ish .....of the 235 Speer left. They worked awesome on a now departed 375 h$h. Haven't bothered, with so few, trying them in my Rum. I get 3050 in the Rum with 260 partitions, bet it would be 33-3400 for the Speer. The world's largest varmint gun.

Really, 375's aren't something I equate with high bc, long range shots. Doubt it matters what the bc matters, for almost all shots and game one would use a.375 to hunt.
 
nowarningshot said:
Only have a few...20ish .....of the 235 Speer left. They worked awesome on a now departed 375 h$h. Haven't bothered, with so few, trying them in my Rum. I get 3050 in the Rum with 260 partitions, bet it would be 33-3400 for the Speer. The world's largest varmint gun.

Really, 375's aren't something I equate with high bc, long range shots. Doubt it matters what the bc matters, for almost all shots and game one would use a.375 to hunt.
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I live in BC. Never shot a deer over 200. And there is about 30 of them. Most of them whitetail at 25-90 yards. I'll try the long range mulies sometime.
 
unstableryan said:
Barely related but after the bullet test on here, I reloaded 40 235 gr speer for the hunting season and fun at about 2800. I will not quartering away shoot a deer with one, but a good broadside lung or neck shot, I'm curious. Probably make food.
Click to expand...

I'd expect that to work fine even quartering away, on deer. There just isn't a lot of meat and bone to go through on a deer even quartering away. Almost anything in 37 caliber is going to work on a deer.
 
Woodleigh 300gr RN and 300gr PP

  • results today with IMR 4064 / Woodleigh 300gr RN & 300gr PP
  • 300gr PP POI about same as 300gr CEB & 270gr TSX
  • 300gr RN POI a bit low
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Interesting thing about the .375 H&H is different bullet weights don't change the point of impact much at all. I sight mine in in at 2" high at 100 yards with 300 gr RN. This keeps me with a freehand POI of about a 4" circle at all realistic hunting ranges.
 
Check 200m accuracy

  • results today aimed with x-hair center
  • on 9x upper ballistic dot should be used at 200m
  • strong wind gusts :(

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