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My favorite bullet for the 7x57 is the 170 gr. Sierra round nose. Sierra dropped them years ago but I have a decent supply.
Paul B.

Last edited by PJGunner; 01/05/20.

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The European CIP standard chamber dimensions call for a very long throat, and a fast rifling twist. Both are made for long for caliber, heavy bullets. Many 7x57 rifles shoot better with heavy long bullets because that's what they are designed for. Correct me if I'm wrong, but to my limited understanding, hunters in the Southern USA typically hunt small whitetail deer and hogs. Neither require heavy bullets. I hunt in Canada, where I may use my 7x57 to hunt a variety of game. Our whitetails can weigh twice as much as a southern USA deer, and moose might weigh four of six times that. So heavy bullets make sense here, but where you are, not so much. If your rile will shoot 140's accurately, there is no good reason not to use them for your local hunting. I personally avoid such light bullets because my rifle doesn't shoot them quite as well and they are not a good match for the game where I hunt.

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Yep, probably what I am going to do, load 140’s for deer and rock-on. I do travel a bit though, so the heavy load is intriguing. Truth be told I’ll probably use my 270 with 150 Partitions for bigger stuff, but part of the fun of being a looney is trying different stuff, which is why I have 160’s Partitions on the way. I typically use heavy for caliber bullets in most cartridges I shoot anyway. I like two holes in critters.


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Originally Posted by TomM1
Yep, probably what I am going to do, load 140’s for deer and rock-on. I do travel a bit though, so the heavy load is intriguing. Truth be told I’ll probably use my 270 with 150 Partitions for bigger stuff, but part of the fun of being a looney is trying different stuff, which is why I have 160’s Partitions on the way. I typically use heavy for caliber bullets in most cartridges I shoot anyway. I like two holes in critters.



Your 160 Partitions in the 7x57 will supply you with two holes.....


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A 160 Partition might just work on a Gemsbok......

[Linked Image from i.imgur.com]

Or a Kudu.......

[Linked Image from i.imgur.com]

Or even a Wildebeestie........

[Linked Image from i.imgur.com]

But a Jackal won't stop a 160 Accubond.

[Linked Image from i.imgur.com]


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Jackal can't stop a 175 either!!! laugh

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Not quite a .275 Rigby, but my crew has had excellent results with 160gr NPs in the .270, at about the alleged top velocity folks claim with their 7mms, 2700fps. Just Eastern Whitetails, but for whatever reason, they seem to drop right there or just a few feet away. One of those combos that just works, so even though lighter monos probably penetrate just as well, I suspect the NPs fragment enough to get it done quickly.

It occurs to me that a 7-08 Fieldcraft with 160s would be pretty much the same thing, but in a very handy package; dangerous thinking for an old fat man who already has too many rifles.


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Try the 140’s. If they shoot well and that’s what you like, use them. I use 140’s in 7mm-08, 7 mags, and 7mm ultra mags.

Last edited by hanco; 01/06/20.
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Originally Posted by castnblast
The European CIP standard chamber dimensions call for a very long throat, and a fast rifling twist. Both are made for long for caliber, heavy bullets. Many 7x57 rifles shoot better with heavy long bullets because that's what they are designed for. Correct me if I'm wrong, but to my limited understanding, hunters in the Southern USA typically hunt small whitetail deer and hogs. Neither require heavy bullets. I hunt in Canada, where I may use my 7x57 to hunt a variety of game. Our whitetails can weigh twice as much as a southern USA deer, and moose might weigh four of six times that. So heavy bullets make sense here, but where you are, not so much. If your rile will shoot 140's accurately, there is no good reason not to use them for your local hunting. I personally avoid such light bullets because my rifle doesn't shoot them quite as well and they are not a good match for the game where I hunt.

This all makes sense and I agree. An interesting note in deer sizes though. I killed a buck two years ago that field dressed 250. That’s a giant but still.....the 3.5 year olds usually go 150-170 field dressed. What’s the sizes up there?


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My 7x57 likes 140 TTSX just fine...as do I, no need to look futher.

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35 years ago I had an original 7mm Rolling Block and 13 boxes of Privi 175 grain round nose soft point. It resembled the load pictured below with a little more core exposed, The jacket was pretty heavy and the core was dead soft- you could mark it with your thumbnail.

[Linked Image from wholesalehunter.com]
https://www.wholesalehunter.com/Product/Details/304

The last 2" of the Rolling Block's barrel was washed out so me and a gunsmith pal bobbed it off even with the forend metal, recrowned it and modofied a set of Williams aperture and bead sights to fit. The rifle still had nearly 27 inches of barrel left and it was plenty accurate with that load. I lived in an area rich with deer, coyotes, groundhogs etc. Aside from zeroing and shooting enough to find MPBR, practically every round from the next 6-7 boxes killed something; and for all the modern varmint and deer rifles I've used, nothing flattened stuff like that old Roller with 175 grain RN bullets.





Last edited by SargeMO; 01/06/20.

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Originally Posted by SargeMO
35 years ago I had an original 7mm Rolling Block and 13 boxes of Privi 175 grain round nose soft point..

Aside from zeroing and shooting enough to find MPBR, practically every round from the next 6-7 boxes killed something; and for all the modern varmint and deer rifles I've used, nothing flattened stuff like that old Roller with 175 grain RN bullets.

I've never used it, but the old 6.5x55 with 160gr RN load enjoyed the same reputation. I'm pretty sure I could have used a RN for every big game animal I've ever shot.

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I have a Ruger No. 1-A in 7x57, and have exclusively used 140gr Partitions...but I've always wanted to try the heavier bullets. I have several hundred Winchester 175gr PPs, and also an interesting box of S&B with 173s...

[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
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[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]

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Can't believe RevMike hasn't weighed in on this.


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That is one beautiful rifle, ingwe, looks perfect in every way.

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SargeMO I assume as a loony you sold or traded the Roller. Be Well, Rustyzipper.


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Originally Posted by Pappy348
Can't believe RevMike hasn't weighed in on this.


Been sort of busy. Besides, Poobs has chimed in! grin

I really can't add much to what's been said, especially regarding bullet weight/length and throat length. My Zastava M98 has a long throat and the standard European twise (1:220mm/1:866"). It shoots 175-grain bullets very, very well, but isn't terribly fond of anything between 139 and 154-grains. I recently picked up another 7x57 that I haven't had a chance to shoot yet, but a lot has been written about its "tight chamber" (i.e., shorter throat). I'll have to go back and re-read some of the tests with lighter bullets to see how they fared. Nevertheless, with any 7x57, my suggestion would be to start by measuring the throat and go from there. If it's really long you might have to stick with heavier/longer bullets. But then again, with any individual rifle, maybe not.

Just my $02.

RM


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Tradition and Penetration, 175gr old style Speer grand slams or Partitions will penetrate for days leaving at a leisurely 2700 fps, mag box length, plus generous freebore allows a 3.150" col in my DWM 98 Mauser rifle, they are bughole accurate in calm conditions.


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My Mauser likes 160-175 gr bullets best. Love the combo myself, but have not found a whitetail that will say the same.

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Originally Posted by roundoak
I don't listen to the 7x57 guru's, I load my 7x57s with 139 and 154 grain bullets and for nostalgia use 173 grain Sellier & Bellot SP ammo.



Same here.

Both a 700 MR and a German Mauser shoot 175 (& 173) factory stuff so well, it’s kind of a waste to reload. Still, the former dotes on the 154 SP’s over H4350, so I cobble some together from time to time.

As Poobs mentioned, though, the difference in trajectory ain’t as much as I was expecting. The killing remains boringly effective, and free of drama.

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