The superformance ammunition is 100 to 200 fps faster than conventional ammunition and is safe for use in all firearm types, including semiautos, lever guns and pump actions. Hornady superformance sst ammunition 257 roberts 853. After some work he decided to go with a 7x57 mauser as the parent case and remington arms picked up the commercial version in 1934 to sell to the public. Long story short, due to limited manufacturers making guns in. Townsend whelen mentioned in one of his many books. Loadbooks make excellent reference books for seasoned reloaders, or great primers for newcomers. The idea is a load that will let her learn to shoot and when deer hunting, put a load in that will kill a deer. We currently have two a model 77 ruger and a 98 mauser action chambered in 257 rob. Ps with no disrespect intended toward anyone i must recommend that load development be carefully done from published manuals for the 257 roberts only. Rcbs makes the 25120sp as a production mould but this one runs about 128 grains checked, lubed and ready to load.
I have one of the brownign blr in 257 roberts coming, perfect little stand, blind gun for deer and antelope i am leaning towards the barnes 100gr tsx but wanted your thoughts, ive shot the 257 weatherby and 25 06 but have no experience with the roberts. Powders include imr, accurate, vihtavuori, alliant, ramshot, hodgdon. Using bullets from barnes banded solid spitzer, barnes tsx bt, barnes tsx fb. Havent decided which one will be in the chamber on 1022010 yet, but im. My brother was looking to buy a new rifle and was trying to decide between them. The shipping cost is included in the price of the manual. That powder is long gone now, so id advise going with similar slow powders like h4831, or. My favorite load was a 117 grain sierra at 2925 fps propelled by original surplus 4831. One, the younger will shoot anything you put in her hands, the older one is a little recoil shy. Guns are like gals they all like to think theyre special, especially when it comes to pet loads. Indicates maximum load use with caution rifl e data 257 roberts improved 100g rainb ullets sectional density. I remember this conversion being popular after wwii and on into the 1950s.
H4350115 partition goes 2900 in my rifle with out pushing it. As i mentioned at the beginning of this article, appropriate moulds for the. The corelokt is a very good projectile but at this velocity is best utilized for close range hunting. Theyve all done great with h489575 sierra hp or 75 vmax.
Help me choose, 257 roberts long range hunting forum. Or would the lowest velocity load in the manuals be o. Its capabilities as a deer cartridge specs out as follows243 win. There are many excellent bullet choices, here are our favorites. Im not having any luck finding an accurate load for my. Anyone can tell me the drill for converting 7x57 mauser cases to 6. International orders will be requested through paypal to pay an additional shipping charge. I want to load for the strongest load that holds a decent group. Select a light load of relatively fast powder imr4895 is great from the standard. Given that my loads pushed a 100 grain bullet just at 28002850 fps and maximum loads in my nosler reloading manual show 3000 fps is possible, i really wonder why the 243 was created. But after years of experimentation, heres what works great in my. My favorite deer load is 46h4350100 hornady interlock. Also in that list is another of the mild cartridges, the.
Seat the bullet well out into the rifling, so that it makes good contact with the lands when the cartridge is. One account suggests that had ned roberts been able to take advantage of slow burning powders, he most likely would have adopted the. Cci200 except where otherwise specified in remarks. The richard lee load book 2nd edition, which compiles data from all the other mainstream publishers, lists these exact same hodgdon velocities for roberts 100gr bullet at 52,600 psi maximum, which if correct settles the issue, since the roberts produces equal velocity at 10k psi lower pressure. Doubletap ammo 257 roberts 120gr noslerpartition 20bx. Never exceed maximum loads because excessive chamber pressure will result. My dads favorite load for his 257 roberts 60 years ago was 39. The three highest velocities listed for 100gr bullet are. In a modern gun, one could load this cartridge much higher.
Nothing spectacular, i know, just straight out of the nosler book. This company currently produce a single load for the roberts, the 117 grain corelokt at 2650fps. Likewise, i cannot encourage load development based on data for any other. Hendershots extreme custom ammo is your best choice to maximize the outstanding potential of the 257 roberts.
Never begin loading with the maximum powder charge shown in these reloading data tables, regardless of your experience. I want to load for the strongest load that holds a. It worked well as a trainer for my grand daughters, which was its intended use. Barnes tsx, tipped tsx and lrx the deepest penetrating bullets, they offer excellent accuracy and. Discontinue firing at the first sign of excessive pressure or upon noticing a change in the report of the firearm. One can still find 87, 100, and 117 grain factory loadings, with the 100 and 117 grain the most common. The oldest shot her deer with a j and hit where my son had sighted it. Charge velocity charge velocity load powder grains fps grains fps density % aa 2700 42 5 3070 46 5 3333 88 maximum. Not redlined, but i get 3050fps and terrific performance on whitetail and antelope. Strangely, the only manufacturer to continue producing low powered loads for the. Consider hodgdons data, both from 24 barrel, for 6mm rem and 257 roberts. These guides are an essential part of the library of any owner or cartridge reloader of this popular firearm. I think that no man ever spent so much time in perfecting a cartridge as mr.
Imr 4350 is an excellent powder for our hunting weight bullets. The original factory load for this is very similar to the. Reduced loads for the 257 roberts my 257 roberts is reasonably accurate, but the barrel must be very rough, because it picks up metal fouling like you wouldnt believe. I posted some imfo on a short workup in amdl 70 featherweight 257 roberts using the rcbs 120 and imr 4227. Hornady ammo 257 rbts 117gr sst superform 20bx 10cs. These easytounderstand and wellorganized reloading manuals cover most calibers for pistols and rifles, as well as popular shotgun shell sizes. That powder is long gone now, so id advise going with similar slow powders like h4831, or maybe rl22 or imr 7828ssc might do it for you. However, the 257 roberts pressures are limited to 47,800 cup, while the 6mm rem reaches 62,600 psi.
Pre 64 m70 featherweight 257 roberts 100 grain sierra sp 44. See all formats and editions hide other formats and editions. Partitions, can anyone suggest a load that produces good accuracy. The saami pressure limit for the 257 roberts was set pretty mild because of the weaker 93 and 95 mauser actions that were used to build rifles for the then wildcat 257.