Home Forums Hunting & Shooting Hunting Rifles 257 Roberts Question

No problem sir. How many deer have you killed in the past 5 years?

Nothing wrong with 760/414, almost a ball equivalent to either of the 4350s.

Have used Ken Water's Pet Loads with good success. He did a review of the then new Winchester 70 Featherweight in .257 Roberts. I had ordered one in 1981 when they first came out, and was interested in his findings. I ended up using two of his loads: 100gn Sierra with 45gn of IMR4350, and 75gn Sierra with 40gn of IMR4064. The second load if far from max but is very accurate and easy to shoot.

You ever shot a deer with the 75gr? I'm gonna try it because a guy told me the Hornady 75gr. HP is deadly. I once shot one through a 1/2" soft steel plate.

No, used 100 gn. Defer to others with experience.

Wow!!

Damn. That is fast

Here is a quote from 20 years ago, but as always, start low and work up.

[quote=Mule Deer]I have had .257 handloads pressure-tested at a lab. If you push it up to "normal" .270 Winchester pressures (about 5000 psi beyond +P load) things speed up considerably. I have loaded for about 10-12 Bobs, but have pretty much settled on H4350 for big game loads, but a couple of Ramshot powders also do well.

With the 115 Nosler Partition. I generally load about 44 grains H4350. In the 23" custom barrel of my Ruger #1 this does right at 3000 fps. During testing I increased this to 49 grains before running into trouble. No extraction difficulties, but primers started leaking, and one blew.

Around 47 grains H4350 works great with 100-grainers. Look for at least 3150 fps in 22" barrels.

In my wife's New Ultra Light Arms Model 20 with a 24" barrel, the 120 Partition and 51 grains of Ramshot Magnum gets 2950. The same rifle groups even better with the 100-grain Barnes Triple Shock and 47 grains Ramshot Hunter for just a hair over 3200.

A fine varmint load is the 75 Hornady V-Max and enough R15 to get 3500+.

All these loads shoot into less than an inch for 3 shots at 100 yards, some much less. The V-Max will do .5 or less in many rifles.

Yeah, that is quick! Prolly need to knock a zero off of that.

I've loaded the 117 gr. bullets up to 2800 fps.. Very good results from my M70 FWT..

6.5 Creedmoor data.

> not everyone shoots bambies or a chit load of deer some of us wait for a bigger buck and/ or maybe just a doe ? someday when your older you will understand .why kill everything ? myself i probably seen around 100 + deer this hunting season 2023 and i finally towards the end of the archery season with 1 shot killed a decent buck with an arrow. Pete53

Thank you for the morning chuckle. I'm sorry, I've missed the monster deer he's killed.

No offense but if one is to opine on terminal results, they need to have seen some. 1 deer every 2-3 years is great. Congrats but it's not a pile of data about what happens when a bullet meets flesh compared to 10 deer in the same time period.

Before passing it down to a younger family member, I was loading 110gr Nosler AB to 3163fps with +P brass. Good brass life, excellent accuracy. H4350, CCI200. Better down range ballistics than any other load I tried from 75gr t0 120gr.

Same experience with the 110 gr. NAB. My current batch runs at 2,984 fps from a 24" barrel using H4350.

I'll be taking the current load this Spring and tweaking it for the 110 gr. ELD-X and see what happens.

i have been using my 257 Weatherby mag. with my handloads for around 25 years ,son for 15 years and a couple of good friend 25 years so we know terminal performance on our rifles ? really bring your rifle over i will show you what a 257 Weatherby mag. with a 100 gr. bullet can do with speeds of 3700 fps - 3800 fps for terminal performance and then i will show you some deer horns. >little deer die easier than a big buck will die if you have ever seen or shot a big buck . what you think and post is almost funny or should i say you have no ideal what a bigger cartridge does to deer when shot.

Lol - 257 mag - terminal results while the cartridge in question is a 257 Roberts compared to 6mm. Again - 1 deer over 2 years is not more data than 10 deer over 2 years. The more deer you shoot, the better data set on terminal ballistics. If you're shooting a deer every 2-3 years, congrats, in 25 you got 10. Crop damage permits call that "Tuesday".

I suppose one might call this "small" compared to your deer - it was only 230 lbs dressed, on the butcher's scale. "Big deer up north" right?

OP- How does your manual compare to the on-line data from Hodgdon?

Nosler on-line only showing 760 with the 115 grain stuff.

Again, even though there are mountains of Roberts data, one can still look to the 6.5 Creedmoor data for newer powders.

I'll not explain how a 250Ai and 257 Roberts are the same, nor how a 6.5 CM is just about the same as a 250Ai with a slightly less steep shoulder. Nor will I mention H2o capacities. I'll leave all that up to 'experts' in tights.