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Anyone done any serious work with RL17 in the 7x57 yet? Or did I miss it somehow.....?




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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Bob - Haven't seen anything on RL 17 yet. But I think I'm going to try the 414/760 route. sounds like I should expect pretty good results.

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Rooster
Vern Juenke makes a machine that spins bullets and measures the bullets inductivity along the circumferance as it rolls. The idea is to measure the concentricity of the core. an uneven core generally relates to a bullet that does not spin true in flight.

Seperating bullets this way has proven the worth of the Juenke repeatedly. Monometals are not testable, obviously.

In general:
Older Speer bullets have been better than newer.
Old style screw machine Noslers are extremely consistent.
New ones, not so much... nor even close.
Sierras do not test as well as I had thought they would... but not bad.
Sierra Pro-Hunters in .308 and .284 have been really good.
Hornady has been good in general...

Different boxes may be radically different from one another...
art


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Art - Thank you. Darn, there's probably a small book there to be written. As re: the Noslers, are any of their current bullets being mfgd. on the older type machinery, like the partitions?
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OldRooster, the 49 grain/IMR-4350 load just comes to the beginning of the neck, so there is no compression as I can hear the powder when shaken. Keep in mind that my load is for a military barrel and action with lots of freebore and spacious magazine so I have lots of room to play but, my model handles the same load with shorter OAL fine. Another load I use is 51 grains of MR-3100/139 Hornady SP. Powder is halfway in neck and is compressed but, accuracy is about 1 MOA and velocity runs 2526 fps. Plenty good for the deer I shoot at 100 yards or less.

Last edited by Joe; 10/19/09.

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"there are few better cartridges on Earth than the 7 x 57mm Mauser"
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No, the Partitions are no longer made on the screw machines... That may explain why folks are willing to pay a lot more for them than say big TSX bullets...
art


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Joe - do you know what kind of velocities you are getting with the 49 gr. load? Right now I'm shooting a 48 gr. load behind a Hornday 139. It's been lethal on deer and seems a snappier load than the 140 gr. 2700+ fps I'm shooting in my 6.5. I'm using a CZ 550 mannlicher in 7x57. The 48 gr. load will shoot cloverleafs at 100 yds. I don't have a chrony (I have got to quite buying guns and get one of those things.) Dave

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Originally Posted by OldRooster
Big Redhead, any particular reason for not using the IMR's?


Because I have bought into the Hodgdon "Extreme" hype lock, stock, and barrel. It just sounds so danged appealing that it almost doesn't matter if it's true. That they even understand the concept is good enough for me. I killed a lot of deer with IMR and Winchester powders long before Hodgdon ever printed the word "Extreme" on a powder can. But with a claim like that, why would anyone shoot anything else, especially here in Michigan where it gets cold during hunting season. They got my business, that's for sure.

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Originally Posted by OldRooster
Joe - do you know what kind of velocities you are getting with the 49 gr. load? Right now I'm shooting a 48 gr. load behind a Hornday 139. It's been lethal on deer and seems a snappier load than the 140 gr. 2700+ fps I'm shooting in my 6.5. I'm using a CZ 550 mannlicher in 7x57. The 48 gr. load will shoot cloverleafs at 100 yds. I don't have a chrony (I have got to quite buying guns and get one of those things.) Dave


The 150 NP clocked 2717 fps and the 154 Hornady 2712. I would estimate your load is 2650 give or take 25. Hornady says 2700 fps so we're close.
I see no reason to either worry or wonder as your load seems to be doing quite fine.


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"there are few better cartridges on Earth than the 7 x 57mm Mauser"
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Picked up this one on the 'fire' a while ago (sans glass). Taking it to Africa for PG late summer.

[Linked Image]

[Linked Image]

Thinking about a 1.75-5 or straight 3x.

Bought some Norma Oryx boolit tips (as they like to say in California) 156 gr. to load.

Anyone have experience with these? Norma's website has data for their 204 powder of which I have none...but think H414/H4350/IMR4350 are suitable equivalents.

They also list MRP...seem to recall the RL22 would suffice. Time to renew my sub. to loaddata.com


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Originally Posted by OldRooster
Bob - Haven't seen anything on RL 17 yet. But I think I'm going to try the 414/760 route. sounds like I should expect pretty good results.



H414 should be a good choice as I use it in everything from 257 roberts to 338 win mag with good velocity and consistant accuracy

Randy


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I latched onto a #1A with nice wood. Plan on using it as my goat rifle this fall in Montana.


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Originally Posted by Jambo
Picked up this one on the 'fire' a while ago (sans glass). Taking it to Africa for PG late summer.

[Linked Image]

[Linked Image]

Thinking about a 1.75-5 or straight 3x.

Bought some Norma Oryx boolit tips (as they like to say in California) 156 gr. to load.

Anyone have experience with these? Norma's website has data for their 204 powder of which I have none...but think H414/H4350/IMR4350 are suitable equivalents.

They also list MRP...seem to recall the RL22 would suffice. Time to renew my sub. to loaddata.com



Gorgeous rifle.

If nothing else, you could always peruse data.hodgdon.com and compare notes (if you will) between their 150 and 160 loads; find a starting point that's between the two and play with figures a bit.

My wife's going to be using a 7x57 in Africa in 5 years....although she doesn't exactly know it yet. wink

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My first BG rifle (1985) was a 7 X 57 that I bought from a friend for $250, including a huge 4 X 12 Redfield scope, the same price he'd paid at a West Palm Beach pawn shop. I didn't know anything about it. I was planning to give deer hunting a try, and $250 was as cheap an outfit as I could get. What I really wanted was a Ruger M77 in .270, which I later purchased and used for years. One day I noticed the 7 X 57 sitting in the corner. By this time the internet had come along, so just for the heck of it I typed in the name stamped on the barrel: "W. H. Sukalle", and got the shock of the year to learn that for $250 I had purchased a custom rifle built on a 1949 FN action. I immediately re-scoped the rifle with a Leupold VX II, and now use it as my main rifle. I killed my biggest-ever whitetail with it a couple of years ago and absolutely love it. I may re-stock it with a McMillan, but it shoots great as is. Lightweight, low recoil, and plenty of power. I don't handload, but a good friend does. I run 140 grain Nosler Ballistic tips at 2,900 FPS. Sorry I don't know the rest of the details, but the gun is absolute poison on Georgia whitetails. Nobody around here has ever heard of the caliber, so I just say I'm using a 7MM and leave it at that. It gets old trying to explain what a 7 X 57 is, so I don't try anymore.

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I have a Ruger #1A in 7x57. I handload 160gr speer or Sierra SP bullets over RL22. This load is very accurate and penetrates very, very well.


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i have hunted with the 7x57 all my life have a custom goens rifle that i shoot i think for elk i would use a 50 grains of imr 4350 behind a 140 grain nosler partition its worked good for me on everything up to elk if you hit then right have shot sone x bullets but the rifle dot like them as well as the nosler it not the barns it just the rifle the 160 works real well in my 280 remington that darwin hensley built it wont shoot 140 as good as it should but play around with the 4350 and 160 and 140 45 to 50 grains and you will find something that will shoot if not trade rifles

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I still haven't had any luck finding a jug of IMR-4350. I did however find an 8 pounder of H-4350. I know they're a bit diferent so has anybody used it and have loads to share. I'm not sure I want to use IMR data as they appearto be diferent in burning rate.
Paul B.


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Originally Posted by PJGunner
I still haven't had any luck finding a jug of IMR-4350. I did however find an 8 pounder of H-4350. I know they're a bit diferent so has anybody used it and have loads to share. I'm not sure I want to use IMR data as they appearto be diferent in burning rate.
Paul B.


A few years ago, I found the IMR 4350 was a bit hotter than the Hogdon, IMR loads in my Ruger, gave faster than Hogden, not any where top of spectrum loads so no pressure signs on either load.
rANDY


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We are starting to see both 4350s show up now... grin

Ingwe


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Thanks for the tip on hodgdon. Will check that out.


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