The best 375?

farshot said:
just my 2 cents -- my Sako AV with standard bbl in 375 AI got a little over 2900 ft/s with a 300 gr Sierra I believe -- no pressure signs at all and very very accurate

Many did not believe until they saw it with their own eyes. David Henry did the fantastic re-chamber job and as he says: it shoots like it shoots - dont worry about it.

I backed it off a bit, in case it went overseas with me, to shoot around 2850 ft/s. Shot a 2 1/2 yr old moose at 100 yds from stern to bow and never found the bullet as it passed through the chest and kept on going,

Very nice round in my opinion -- absolutely nothing wrong with any of the others tho - whatever you like. I have to agree that for the price and being able to get a left handed version, the Rugers are quite good
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Unlike a Remington bolt face that has a plunger that will leave a high pressure dimple the smooth Sako bolt face is not overly conducive to showing obvious pressure signs.

The fact that you are matching 375 Ultra ballistics with a much smaller case using the same gunpowder. .
..Should tell you something....

The 375 AI/Wby is good, but it isn't magic.
 
Cdnexpat said:
Did anyone say the 375 winchester?
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Now your talking but I am in the process of having my T/C Contender carbine rechambered too 375JDJ from 375 Win was getting 2150fps with 220gr Hornady FP's from the Win should be able to push a 260gr Accubond to 2300fps now.

Has anyone done a test on the 260gr Accubonds to see at what velocity they will begin to expand at?

Here is a bit more 375 news Nosler is coming out with a 300gr Accubond the 260gr has a BC of .473 I'm hoping that the 300gr is even higher... :)
 
Hi hope that you have SSK aka JD Jones do the rechambering and at the same time have the Armour Alloy finish put on. I had a good friend that had a 375 JDJ. He shot everything from gophers to Moose with it. And all weeone shot, including the gophers! It is very easy to get an accurate load with all bullet weights.

I own a Sako fullstock 375 HH. With 76 grains of 760, I get a dime size group at 100 M. I know of a lady that weighs 100 pounds wet, that uses the same rifle for African and Big NA game. The niece thing about the combo, is that the recoil is straight back. You can see the bullet impact!

My favorite hand canon chambering is the old 45-70 that SSK built for my Contender. The muzle break works very well. Accuracy is 3/4 inch with a Leopold 2 X at 100 meters.

Regards
Henry;)
 
The 375 Ruger has a much smaller case then the 375 HH and it can do "better" at normal pressures then a 375 HH so why cant a 375 AI do the same with newer loads? My loads are at 89 gr of I believe IMR4350 for 2860 ft/s with a 300 gr Sierra BT (DO NOT USE THIS - it is only from memory and for my rifle only)

BTW by pressure signs I mean flattened primers, ease of extraction etc AND micing the base of the brass for expansion - so far no indication of a hand grenade.
 
I just thought of something -- maybe the 375 Ruger has more capacity then a 375 HH --- then my argument falls apart....
 
The Ruger is shorter than the H&H, but not as tapered and has slightly more capacity. Which is why you can easily get 24" barrel H&H velocities from the 20" Alaskan.
 
My basic argument remains tho -- the 375 AI can get velocities close to RUMs or their ilk just as the Ruger or other more efficient rounds now do - without dangerous pressure.

The 416 Rem / Ruger crowds the Rigby for performance, same with the other short mags vs the originals.

I am not advocating over loads at any time -- never -- but people can get great results from AI 30-06 for example (some even without over pressure)

The new powders and the ability to chrono your loads enables one to really experiment to find the sweet spot for your rifle and load.
 
I htink the 375 AI/375 Weatherby is a great cartridge, I was actually going to have a rifle built for it prior tot he Rugers announcement. When the Ruger came on the market, I cancelled my plans and sold the donor rifle I had purchased...Never regretted it;)
 
farshot said:
My basic argument remains tho -- the 375 AI can get velocities close to RUMs or their ilk just as the Ruger or other more efficient rounds now do - without dangerous pressure.
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Never questioned that, questioned it surpassing the 375RUM...
 
The 375 RUM has about 10% more case capacity than the 375AI. Using Barsnes 4-1 rule, the RUM *should* have about 2.5% more velocity, but that small amount could easily be affected by other facotors including a "slow" barrel or longer barrel length or voodoo...;)
 
I suppose my final comment is that until you shoot the rifle, you just dont know what it will / can do. Every rifle has its own character - many good and some bad.

The voodoo comment is probably very appropriate with some guns -- they just do things good or bad without explanation (that we can figure out anyways).
 
I am new to the 375 caliber I happen to pick up a 375 RUM for a good price and I am very happy with its performance. As for what ones the best. Personally I was looking for any 375 that you can get a deal on great caliber and I look forward to shooting it more.
 
Gatehouse said:
The 375 RUM has about 10% more case capacity than the 375AI. Using Barsnes 4-1 rule, the RUM *should* have about 2.5% more velocity, but that small amount could easily be affected by other facotors including a "slow" barrel or longer barrel length or voodoo...;)
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Between my 375wby and 375 Ultra I find about 100-150fps difference with the 270gr bullets and a bit more with the 300's.

Fired cases probably have more than a 10% difference. My 375wby uses 86 grs of H-4350, where my 375 Ultra uses 106grs of RL-25....Obviously burn rate comes into play here, but the Wby can't use RL-25.
 
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X-fan said:
Between my 375wby and 375 Ultra I find about 100-150fps difference with the 270gr bullets and a bit more with the 300's.
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More than 2.5% but not much difference at all, really. I still don't know why Weatherby stopped making their 375, but I guess they wanted to sell the new 378


Fired cases probably have more than a 10% difference. My 375wby uses 86 grs of H-4350, where my 375 Ultra uses 106grs of RL-25....Obviously burn rate comes into play here, but the Wby can't use RL-25.
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I didn't measure case capacity with water, I just took the info off the intraweb...;)
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Gatehouse said:
The 375 RUM has about 10% more case capacity than the 375AI. Using Barsnes 4-1 rule, the RUM *should* have about 2.5% more velocity, but that small amount could easily be affected by other facotors including a "slow" barrel or longer barrel length or voodoo...;)
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This statement makes a lot of sense, in all honesty I don't know why my Ackley performed as well as it did....but it did .
Back in the early 1990s when I had it re-chambered, I'm sure if the 375 Ruger or the 375 RUM were in existence I would have gone that way instead.
To change the subject for a second regarding the "slow barrel or Voodoo" I have a 6.5x55 with a 2" shorter barrel than an identical 6.5 same make & model....the shorter gun will shoot the same load faster by 50 to 90 fps or more, go figure ??
My Brother also has a 375 Ackley with a Bevan barrel and it is slower than my old gun and with the same bbl. length.....
 
Kevan, did you have that Ackley on gun juice?
or blessed with holy solvent?
:D

Because surely this isnt possible. We have been had.
 
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