Best powder for 7x57 mauser?

M*unt Sweetness said: Looking for recommendations on a good common powder for 7x57 with bullet weights in the 130gr to 150gr range. I'd like to get as much velocity as possibly, modern action. Anyone have first hand experience? All I have on hand currently is Varget and the listed velocities seem weak.

S*lverado said: Try one of the 4350's, 4895 or RL19.

N*el said: H414 is the best powder I have found after trying a few others. The load seems to work well in a couple friend's rifles as well. Best accuracy was found at the heavier end of the charge weight. A friend was using Varget but when he tried the 414 he had much better results. As for experience first hand, been using this load for five years. Taken an Elk, 3 Deer, a Moose, two Bighorns and a Wolf so far. Seems proven enough for me. This is for the 154gr Hornady bullets (IB,SP,RN), the lighter ones didn't shoot very well in my rifle.

F*ssteel said: MS My 7x57 shoots many things well, but my go to load is with barnes TSX 140gr. gave me great groups at 200 yards and killed big Alberta deer very effectively. FS

L*ngwalker said: H4350 for me and the three 7x57's I've tried it in.

b*arhunter said: 49.0 grains of W760 under a 140 grain bullet will give you 2700+fps from a 22 in bbl at less than 40,000psi. This is a very accurate load in at least a dozen rifles. It's light recoiling for smaller or recoil sensitive shooters and is safe in M93 actions. At 2700 fps its trajectory is flat enough to equal a 308Win and is very close to the 308Win in most aspects for hunting.

M*unt Sweetness said: Looks like I have a few options, but no go to powder? 4350, 4895, RL19, H414, W760

j*mmyjazz said: I will let you know my results tomorrow going to range in the morning to try a few different loads.

mb*go3 said: Win 760/49gr for 140 gr and Re22 /50gr for 160 gr in my 21H BRNO all make slightly larger than one hole 3 shot groups..........Harold

b*arhunter said: Harold, I use those same exact loads in all of my 7x57s. Brazilian mausers, Rem 700 Classic, Win Mod 70, BSA and a couple of Spanish mausers. They are low pressure and safe. Not only that, the W760 load duplicates the velocities of the south american loads in their milsurps. The Re22 seems to work better from the 29in barrels than it does from shorter barrels though. The Re22 seems to be to slow for the 140grn bullets as well.

N*el said: Looks like I have a few options, but no go to powder? 4350, 4895, RL19, H414, W760 Tough call which one works for your specific rifle. As you can see we all have our favorites. YOu get to choose which flavor you like best.:popCorn:

mb*go3 said: Fed mag primers used in all my loads............Always use them with Win 760........................Harold *** Win 760 is also the CAT"S A$$ in .308Win/150gr ,270 Win/130gr + .250 Savage/100gr

S*lverado said: For any case in the 45-60 gr capacity range with bullets of 130-180 grains, I always try one of the 4350's first. That basically covers all the x55 and x57 mauser cases, and the '06 and 08 family of cases.

s*nray said: "...listed velocities seem weak..." The 7mm Mauser isn't an anti-tank gun cartridge. It dates from 1892 when smokeless powders were still relatively new. Accuracy is far more important than velocity. Varget will do nicely.

*agleye said: I have used Norma MRP in the 7x57 with 140-160 grain bullets for several decades now. But all the powders mentioned work well, and I would also add IMR 4831. In a modern action, velocities with the 140 are in the 2900 fps area, the 150 is around 2800 and the 160, 2700. Regards, Eagleye.

s*nray said: "...velocities with the 140 are in the 2900 fps area..." Not with IMR4831 they aren't. Max velocity for a 140 is 2759fps. "...the 150 is around 2800 and the 160, 2700..." You must be looking at a very old manual. Neither even comes close to those velocities with any powder.

j*mmyjazz said: I was under impression H414 & W760 are the same powder? JJ

mb*go3 said: No they're not .Not as far as I know? Re22 was very close to the older Norma MRP,HS7 is same as Win 571 and H-110 clone of Win 296 etc................Harold

M*unt Sweetness said: Keep it coming boys, leaning towards Win760 as I will be most liking using 140gr bullets. Bullet recommendations for whitetail hunting? - obviuosly everyone love Nosler Partitions - Does anybody have positive things to say about Sierra Gamekings on deer.....or Hornady Interlock.....etc etc?

mb*go3 said: Hornady works for me.Don't need a $$$$Partition$$$$$ for a deer..........Harold

b*arhunter said: jj, H414 tends to be slightly faster than W760. Several years ago, there was a lot of commercial powder released by Higginson's. It was labeled H414 SL 10. SL 10 stood for slow lot batch 10. It was advertised as being the same as W760 and the same loading tables could be used with it. That started the myth. This wasn't the complete truth. H414 SL 10 was actually slower than W760, so the tables would be safe. H414 SL 10 wasn't then and isn't now, normally available to the average hand loader. It was developed for the "light magnum" craze at the time for commercial cartridge loaders. What Higginson was selling,was the over production remnants. H414 SL 10 is fantastic powder by the way. It is the most consistent and least temperature sensitive powder I've ever used. Even better than Varget. It's to bad it isn't available off the shelf and that Higginson's doesn't carry it or any other surplus powders any more. Maybe the surplus powder market has dried up? It's just to bad. I hope my batch will last long enough.

mb*go3 said: Yes I had some Nobel H-4831 that was great too, from Higginson as well........Harold

Why n*t? said: "...velocities with the 140 are in the 2900 fps area..." Not with IMR4831 they aren't. Max velocity for a 140 is 2759fps. "...the 150 is around 2800 and the 160, 2700..." You must be looking at a very old manual. Neither even comes close to those velocities with any powder. You are not only wrong, but you aren't even close. :rolleyes: It is no trick at all to get these 7X57 velocities in a modern-action rifle, which is what Eagleye posted. Ted

*agleye said: You are not only wrong, but you aren't even close. :rolleyes: It is no trick at all to get these 7X57 velocities in a modern-action rifle, which is what Eagleye posted. Ted Thanks Ted, you saved me the trouble of coming to my own defense. I have easily reached the stated velocities in my Ruger #1 & 77, and my Remington 700 "Classic". Brass lasts forever, and no excess pressure signs at all. Regards, Eagleye.

b*arhunter said: The Brazilian military load drove a 140 grain bullet at 2900fps from a 29 inch barrel. I bought a case of reformed stuff from International some years back and chronied it, the load was actually a bit more substantial than that. The powder in the cases was some sort of extruded type that wasn't very uniform in size or shape. It was acceptable for accuracy by military standards though.

d*wnwindtracker2 said: I've heard from good sources W760 and H414 are the same,different lots though. I've had pretty large swings in burning rates with different lot numbers in even IMR4350. Some Norma and Reloader criss-cross as do ADI and Hogdson.

j*mmyjazz said: jj, H414 tends to be slightly faster than W760. Several years ago, there was a lot of commercial powder released by Higginson's. It was labeled H414 SL 10. SL 10 stood for slow lot batch 10. It was advertised as being the same as W760 and the same loading tables could be used with it. That started the myth. This wasn't the complete truth. H414 SL 10 was actually slower than W760, so the tables would be safe. H414 SL 10 wasn't then and isn't now, normally available to the average hand loader. It was developed for the "light magnum" craze at the time for commercial cartridge loaders. What Higginson was selling,was the over production remnants. H414 SL 10 is fantastic powder by the way. It is the most consistent and least temperature sensitive powder I've ever used. Even better than Varget. It's to bad it isn't available off the shelf and that Higginson's doesn't carry it or any other surplus powders any more. Maybe the surplus powder market has dried up? It's just to bad. I hope my batch will last long enough. Hey Bearhunter, I was told that directly by the Hodgdon rep for Canada 15 years ago at the Canadian shotshow in Hull. He told me Hodgdon did not make any ball powder, they purchased and repackaged Olin, and they are interchangeable. ??? Maybe this has changed since then?? H414 same as W760 H110 same as W296 HP38 same as W231 Cheers, JJ

b*arhunter said: my information came from Tom Higginson about the same time. He challenged me to try the same "max" load of W760 and H414 in the same case in the same rifle. The H414 flattened the primer, which was from the same box.

j*mmyjazz said: Funny stuff. eh? Why would he tell me that, could be dangerous.? I have been using H414 for years maybe I will try some loads with W760 and see how it goes. Cheers, JJ

N*el said: Keep it coming boys, leaning towards Win760 as I will be most liking using 140gr bullets. Bullet recommendations for whitetail hunting? - obviuosly everyone love Nosler Partitions - Does anybody have positive things to say about Sierra Gamekings on deer.....or Hornady Interlock.....etc etc? Hornady Interlock is all I'm using anymore. Started out with the Interbond but in the cartridge the standard cup core is plenty enough IMO. I only have one experience with the GK (not in 7mm)and wasn't very impressed. I'll let others comment who have more experience with it. THey are too soft like a factory Federal bullet load.

cr*zy_davey said: Best powder for 7x57 mauser? Whatever Noel is loading ;)

b*arhunter said: downwindtracker2, Upon doing more research W760 vs H414, you are CORRECT. They are made to the same specs and are of course completely interchangable. Why I had the results I did, I can't explain. The only thing I can surmise is the difference between lots being at opposite extremes of the specs. Again, you are CORRECT. H414 and W760 are the same powder.

N*el said: downwindtracker2, Upon doing more research W760 vs H414, you are CORRECT. They are made to the same specs and are of course completely interchangable. Why I had the results I did, I can't explain. The only thing I can surmise is the difference between lots being at opposite extremes of the specs. Again, you are CORRECT. H414 and W760 are the same powder. Bearhunter, what is your source for this info? Not that I don't believe you, but we should post the source of info for folks reading this thread. Just like you got different results, someone who take this as gospel might run into trouble when they start dumping 760 in their cases at will. Cheers!

*agleye said: I have always regarded W760 and H414 as basically the same powder. Just like any other commercial powder available, there are lot-to-lot variations. However, in using both of them extensively, I have yet to see a significant difference in the performance of the two. Regards, Eagleye.

b*arhunter said: Actually, I read an article in the latest (October) Handloader magazine article. There is an article on page 29, concerning Winchester and Hodgon Powder Interchangeability. They list four Hodgdon powders and the Winchester powders they duplicate. After my own experience with H414 and W760 and being a natural sceptic, I went back and checked some reloading notes again. They verified my previous statement about H414 being slightly faster. I do know that powder is often made by different manufacturers and sometimes even in different factories and countries, thereby being subject to a vast range of quality controls. It's the only explanation I can give for my results and of course the word of Tom Higginson. Tom was a bonafide expert and never steered me wrong with propellant advice in the 20+ years I knew him. He wouldn't have said it if he didn't believe he knew it.

N*el said: I'm suprised this has never come up before. It's great news if one or the other is not available a guy could get the other one.

nr*t said: I'm suprised this has never come up before. It's great news if one or the other is not available a guy could get the other one. You must have been in the doghouse when this was discussed before Noel:p

N*el said: You must have been in the doghouse when this was discussed before Noel:p Must have..:p Either there or shooting those whiskey bottles at Calaway. Still can understand why they won't let you use your own guns at the gallery.:rolleyes:

nr*t said: Must have..:p Either there or shooting those whiskey bottles at Calaway. Still can understand why they won't let you use your own guns at the gallery.:rolleyes: Shooting WHISKEY BOTTLES???... Do they let you empty them first?

N*el said: Normally no, most the folks use the little laser gun to hit the target. It falls over and then a jet of water comes flying out to hit you in the face. Was pleasantly suprised this is my kids favorite spot to play when we go there. Who needs rollercoasters when you can shoot stuff. I guess the 22 didn't blend in too well....

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