380g .375 Rhino (pic)
- Thread starter crazy_davey
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- Location
- AB foothills
Well, I shot a few of these today. They shoot quite well out of my rifle with 63g of IMR 4350.
I saved one of these for the end of the day to fire into a dead tree. I lined up two dense dead trees the first being about 13-14" thick. I made sure that I had them lined up so that if it went through the back one would stop it. I shot at 25 yards, it went through the first tree and stuck half way into the second. I managed to get it out with my Firestone axe only hitting it once or twice
Not the best bullet test, but fun anyways.
The original bullet weighed 378.87g, after getting all the wood chunks out of it and making sure it was clean it weighed out at 376.86g.
I saved one of these for the end of the day to fire into a dead tree. I lined up two dense dead trees the first being about 13-14" thick. I made sure that I had them lined up so that if it went through the back one would stop it. I shot at 25 yards, it went through the first tree and stuck half way into the second. I managed to get it out with my Firestone axe only hitting it once or twice
Not the best bullet test, but fun anyways.
The original bullet weighed 378.87g, after getting all the wood chunks out of it and making sure it was clean it weighed out at 376.86g.
Boomer,
You are correct where it comes to H-4831, Rl-19, Rl-22...All are good accurate powders but not much or any improvement in velocity.
Such is not the case with RL-25 as it does allow increased velocity or will allow the same velocity with lower pressure.
I have been shooting the 375 Ultra since it was known as the 375-404...If that means anything to you.
I re-read this post re your 20" 375 Ultra...Is that correct?
If it is my experience may not apply.
You are correct where it comes to H-4831, Rl-19, Rl-22...All are good accurate powders but not much or any improvement in velocity.
Such is not the case with RL-25 as it does allow increased velocity or will allow the same velocity with lower pressure.
I have been shooting the 375 Ultra since it was known as the 375-404...If that means anything to you.
I re-read this post re your 20" 375 Ultra...Is that correct?
If it is my experience may not apply.
- Location
- Somewhere on the Hudson Bay Coast
X-fan said:Boomer,
You are correct where it comes to H-4831, Rl-19, Rl-22...All are good accurate powders but not much or any improvement in velocity.
Such is not the case with RL-25 as it does allow increased velocity or will allow the same velocity with lower pressure.
I have been shooting the 375 Ultra since it was known as the 375-404...If that means anything to you.
I re-read this post re your 20" 375 Ultra...Is that correct?
If it is my experience may not apply.
That's right, it's a 20" .375 Ultra. The idea was to get .375 H&H velocity from a short barrel. This it does with a little to spare. When I load bullet weights under 300 grains I drop the loads to stay around 2600, I get 2600 with 300's and so far 2300 with the 380 gr. Next time I'm back in civilization I'll pick up some R-25 and see what happens. There might be a benefit with a very heavy bullet like the 380 Rhino.
By the way, I am familiar with the .375-404, and the .460 G&A. If I ever own another .45 caliber rifle, it will be a .460 G&A, probably built the same way as my .375.
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crazy_davey said:Well, I shot a few of these today. They shoot quite well out of my rifle with 63g of IMR 4350.
I saved one of these for the end of the day to fire into a dead tree. I lined up two dense dead trees the first being about 13-14" thick. I made sure that I had them lined up so that if it went through the back one would stop it. I shot at 25 yards, it went through the first tree and stuck half way into the second. I managed to get it out with my Firestone axe only hitting it once or twice
Not the best bullet test, but fun anyways.
The original bullet weighed 378.87g, after getting all the wood chunks out of it and making sure it was clean it weighed out at 376.86g.
I would have to say the Bears up north are in big trouble! They sure hold the weight!
Good luck stopping that bullet in a wee black bear.Boomer,
Rl-25 is as slow as charcoal in the 375 Ultra.
With your 20 inch tube well...You and the guys shooting beside you might want to wear sun glasses!
I have Rl-25 load data for the 300 Grain bullets.
PM me if you want it for a starting point.
I have a 450-375 Ultra reamer on its way.
I am told 111 Grains of win 748 (Max) will push a 500 Hornady way over 2500 fps in a 24 inch barrel.
Supposedly 2600 is attainable.
Recoil is intense in a 9 pound rifle.
With a 20 inch barrel you could easily obtain 458 Lott Velocities.
Good luck!
Rl-25 is as slow as charcoal in the 375 Ultra.
With your 20 inch tube well...You and the guys shooting beside you might want to wear sun glasses!
I have Rl-25 load data for the 300 Grain bullets.
PM me if you want it for a starting point.
I have a 450-375 Ultra reamer on its way.
I am told 111 Grains of win 748 (Max) will push a 500 Hornady way over 2500 fps in a 24 inch barrel.
Supposedly 2600 is attainable.
Recoil is intense in a 9 pound rifle.
With a 20 inch barrel you could easily obtain 458 Lott Velocities.
Good luck!
- Location
- Somewhere on the Hudson Bay Coast
I'd be interested in your R-25 data.
If I recall correctly, I think 90 grs of 4064 in a .460 G&A with a 20" barrel got 2400 on the nose with a 500 gr Hornady. I prefer a bottle neck case to a straight wall case in a bolt gun. I tease Pounder at every opportunity that his .458 is a pistol cartridge, which I define as any straight wall case under.50 caliber that is less than 3" long.
If I recall correctly, I think 90 grs of 4064 in a .460 G&A with a 20" barrel got 2400 on the nose with a 500 gr Hornady. I prefer a bottle neck case to a straight wall case in a bolt gun. I tease Pounder at every opportunity that his .458 is a pistol cartridge, which I define as any straight wall case under.50 caliber that is less than 3" long.
Boomer,
I'm with you on the 458......Poor excuse for a big bore!
Reminds me of a bad tempered little kid.
The crimp is critical in a straight wall.
Give me something with a neck every time.
I am a big fan of the 416. It really hammers game!
In fact the bigger the game the better the 416 works. The extra mass must expand the bullets a little more violently or something.
The 400 gr. Nosler is becoming the stuff of legends in Africa and it sure as heck puts the lights quick out over here!
The 416 Rem works great in a short barrel, shoots flat enough for most, and will flat out penetrate just about any caliber made.
In my opinion the 416 is both a huge step up from the 375 and is perhaps the best Canadian heavy.
Could be a match made in heaven for ya!
I even have one I could be talked out of!
I'm with you on the 458......Poor excuse for a big bore!
Reminds me of a bad tempered little kid.
The crimp is critical in a straight wall.
Give me something with a neck every time.
I am a big fan of the 416. It really hammers game!
In fact the bigger the game the better the 416 works. The extra mass must expand the bullets a little more violently or something.
The 400 gr. Nosler is becoming the stuff of legends in Africa and it sure as heck puts the lights quick out over here!
The 416 Rem works great in a short barrel, shoots flat enough for most, and will flat out penetrate just about any caliber made.
In my opinion the 416 is both a huge step up from the 375 and is perhaps the best Canadian heavy.
Could be a match made in heaven for ya!
I even have one I could be talked out of!
- Location
- Somewhere on the Hudson Bay Coast
I am bewildered that Remington did not bring out their .416 on the .404 case. Had they done so, the .416 Remington would of been a wonderful cartridge. The Ultra line was so close on the heals of the .416 Remington, they must of had them in mind.
I carried a Ruger #1 in .416 Rigby for a while, and I'd still be packing it today except for an unfortunate house fire. The worse part about the Rigby was the cost of brass - which if I remember correctly set me back about $200.00/50. Ballistically the Rigby is a fine round.
After that I packed a Whitworth .458, but it was way too pretty for what I needed a rifle for, so I swapped it for this 602 - which I promptly sent out for some tweaking. I had intended to make this rifle a .460 G&A, but i had a pal with this stainless .375 barrel he didn't need so. . . Now it is a .375 Ultra which looks like this -
CLICK!
I did some number crunching with R-25 in the .375 Ultra and decided that with 300 gr bullets I could probably work up to about 106 grs. That sound about right to you?
I carried a Ruger #1 in .416 Rigby for a while, and I'd still be packing it today except for an unfortunate house fire. The worse part about the Rigby was the cost of brass - which if I remember correctly set me back about $200.00/50. Ballistically the Rigby is a fine round.
After that I packed a Whitworth .458, but it was way too pretty for what I needed a rifle for, so I swapped it for this 602 - which I promptly sent out for some tweaking. I had intended to make this rifle a .460 G&A, but i had a pal with this stainless .375 barrel he didn't need so. . . Now it is a .375 Ultra which looks like this -
CLICK!I did some number crunching with R-25 in the .375 Ultra and decided that with 300 gr bullets I could probably work up to about 106 grs. That sound about right to you?
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Good guess!
Now that you have put it in print....
I need to check my notes but I think my starting load of 102 grains pushed the 300 Noslers to 2920 and I worked my way up until I saw pressure signs at 107-108.
Max working load seemed to be 106 grains (Safe in my rifle but will probably blow yours up) and 3060 fps!
The 416 Ultra idea is why my 416 Rem is for sale.
Nothing wrong with the Rem but another 300fps or so would make the 400 grainers better suited to 300 yard shots.
What does your 375 Ultra weigh?
Now that you have put it in print....
I need to check my notes but I think my starting load of 102 grains pushed the 300 Noslers to 2920 and I worked my way up until I saw pressure signs at 107-108.
Max working load seemed to be 106 grains (Safe in my rifle but will probably blow yours up) and 3060 fps!
The 416 Ultra idea is why my 416 Rem is for sale.
Nothing wrong with the Rem but another 300fps or so would make the 400 grainers better suited to 300 yard shots.
What does your 375 Ultra weigh?
- Location
- Somewhere on the Hudson Bay Coast
With scope, sling, and a full magazine, my 602 weighs 9 pounds.
I'm interested to see what might happen backing the 380 gr Rhino's with R-25. My working load with that bullet is 84 grs of 4350, which is a full grain below max, and 2 grs below a sticky bolt. There was actually very little velocity gain when I increased the powder charge from 84 to 85 grs, so the additional pressure from the heavier load was pointless. Based on your R-25 data, and my guessing, I should be able to start with 95 grs, and work up to a safe working load at 100 grs. It will be interesting to see what the chronograph says.
I'm interested to see what might happen backing the 380 gr Rhino's with R-25. My working load with that bullet is 84 grs of 4350, which is a full grain below max, and 2 grs below a sticky bolt. There was actually very little velocity gain when I increased the powder charge from 84 to 85 grs, so the additional pressure from the heavier load was pointless. Based on your R-25 data, and my guessing, I should be able to start with 95 grs, and work up to a safe working load at 100 grs. It will be interesting to see what the chronograph says.
Boomer,
15 grains more with a powder that has a higher energy content can only help.
Like stepping from the 30-06 to the 300win.
I am willing to bet the starting load will come pretty close to your old max load.
The only caveat being that you may run out of room with that great long bullet!
One grain isn't very significant at this case size especially if your variation is a bit high.
Let my know how you make out with the 380/RL-25 thing...Might try it myself!
P.S.
I might have a spare 602 I could be talked out of...Need another?????
15 grains more with a powder that has a higher energy content can only help.
Like stepping from the 30-06 to the 300win.
I am willing to bet the starting load will come pretty close to your old max load.
The only caveat being that you may run out of room with that great long bullet!
One grain isn't very significant at this case size especially if your variation is a bit high.
Let my know how you make out with the 380/RL-25 thing...Might try it myself!
P.S.
I might have a spare 602 I could be talked out of...Need another?????
- Location
- AB foothills
Boomer, a while back you had some 380g Rhino bullet testing info, pics etc.. Why not add them here to show what you are getting out of the ultra.
Crazy Davey,
WOW! Those are amazing looking bullets and excellent pictures of them, in original and "tree-expanded" form.
Thanks for the look into this big stuff...makes me think my .340 Weatherby is just a little guy!
Jeff/1911.
WOW! Those are amazing looking bullets and excellent pictures of them, in original and "tree-expanded" form.
Thanks for the look into this big stuff...makes me think my .340 Weatherby is just a little guy!
Jeff/1911.
- Location
- Somewhere on the Hudson Bay Coast
I've posted these before, but I guess it won't hurt to post them again.
The test was conducted to test the suitability of the 380 gr bullet as a close range stopping load. A 270 gr XLC and a 300 gr X bullet were used as a basis of comparison. Each shot was chronographed, with the 270 getting 2800, the 300 getting 2600, and the 380 getting 2300. The target(s) were a line of plastic 5 gallon oil pails filled with wet drill mud. The results speak for themselves.
The test was conducted to test the suitability of the 380 gr bullet as a close range stopping load. A 270 gr XLC and a 300 gr X bullet were used as a basis of comparison. Each shot was chronographed, with the 270 getting 2800, the 300 getting 2600, and the 380 getting 2300. The target(s) were a line of plastic 5 gallon oil pails filled with wet drill mud. The results speak for themselves.
- Location
- Somewhere on the Hudson Bay Coast
Very often folks test bullets by shooting into a dry medium. This is a mistake. It has been my observation that for a bullet to perform as designed it must be shot into a wet medium. Even with very little resistance, the bullets will show signs that they will open as seen below. In this instance the bullets were fired into a very long wet snowbank at 100 yards. This test indicates that these bullets will function as designed even in light framed game animals.
If however one shoots into a dry medium bullet failure is almost guaranteed as seen in the next pic. The 380 gr bullet in this case was fired into a very old 18" fir timber at close range - 10 yards.
This test proved very informative, answering two questions. First of course is that a soft point bullet will fail when shot into a dry material. But not only did the bullet fail to open, it bent. When a bullet bends it cannot penetrate in a straight line.
The fact that the bullet bent in a material as dense as a fir timber supports the claim that a properly designed solid hunting bullet may be prone to failure if made too heavy (long). When a bullet is very long, due to the mass at the base of the bullet, when the noseencounters resistance, the bullet wants to swap ends. As the bullet turns penetration is lost, and the trajectory will simply follow the path of least resistance. Bad news if this happens on dangerous game.
If however one shoots into a dry medium bullet failure is almost guaranteed as seen in the next pic. The 380 gr bullet in this case was fired into a very old 18" fir timber at close range - 10 yards.
This test proved very informative, answering two questions. First of course is that a soft point bullet will fail when shot into a dry material. But not only did the bullet fail to open, it bent. When a bullet bends it cannot penetrate in a straight line.
The fact that the bullet bent in a material as dense as a fir timber supports the claim that a properly designed solid hunting bullet may be prone to failure if made too heavy (long). When a bullet is very long, due to the mass at the base of the bullet, when the noseencounters resistance, the bullet wants to swap ends. As the bullet turns penetration is lost, and the trajectory will simply follow the path of least resistance. Bad news if this happens on dangerous game.
- Location
- AB foothills
The bullet in the middle is a 380g Rhino found after killing a black bear last weekend. After cleaning it it weighed 99% of its original weight.
Next up on the testing block is the 350g Woodleigh on the right, 300g TSX left.
Left to right is the 380g Rhino, 350g Woodleigh, 300g TSX, and 285g Grand Slam.
Hopefully this weekend for the Woodleigh........
Next up on the testing block is the 350g Woodleigh on the right, 300g TSX left.
Left to right is the 380g Rhino, 350g Woodleigh, 300g TSX, and 285g Grand Slam.
Hopefully this weekend for the Woodleigh........
- Location
- AB foothills
geologist said:
They have been here all along, you just need to know where to find them
