.257 Roberts

[Pre64]

I've no complaints with my current combo of 42 gr. of IMR4350 and 115 gr, NPs. I'm 2 grains over max according to the Nosler manual. BUT, the Hodgdon/IMR site lists 45.5 grains as max load. That's a pretty big jump.

Anybody use this combo?? What kind of velocity are you getting?

 

[RELH]

Pre64;

I do not shoot a 257 Roberts, long time user and fan of the 25-06. I checked my "Pet Loads" by Ken Waters. On the loads for the 257 Roberts, he lists a load of 43 gr. IMR-4350 with a Hornady 120 gr. Hp for a velocity of 2733FPS in a 24 inch barrel. He rated the load as "standard" and having very good accuracy in a Win. M-70.

In his load development, he would measure the case in front of the web before and after shooting. A certain amount of case expansion would determine if the load was a standard load or hot load based on the amount of case expansion.

RELH

 

[tex270]

Most reloading manuals are a little on the conservative side for this great little round. I use IMR 3031 for 100 gr. and under and IMR 4064 for the heavier bullets. My little Ruger ultralight has a 20" tube, so I have always used a little faster burning powders.

 

[Pre64]

I need to buy that book. Be nice to read it at home for a change.

Variation between manuals is to be exptected, but this is a 12% difference in max load listing for the exact same bullet.

I'm getting 2750 fps. That's fast enough for me and in the envelope where I thing the partition performs best. groups tightened as the velocity increased. I may squeeze a little more out of it. I need a winter project anyway.

Tnx

 

[lve2143]

IMR 4350 is the best powder for
the Roberts with a 100 grain bullet.

It will get things done.

With quickness.

Laro

 

[MaineFlatlander]

Most of the time IMR4350 with 100 gr Barnes but have started playing with Hunter. Good results so far.

 

[Pre64]

257 Roberts. 115 gr NP. 1200 yard shot (1050 yards by Danner, 150 yards by Winchester).

 

[WITUfan]

IMR 4350 behind a 100 grain Barnes TTSX shoots incredibly well out of mine as well.

Cool elk photo! Proof it is about placement and bullet construction more than anything else.

 

[whitwell_56]

H4831SC pushing a 117 Grain Round Nose bullet. Devastating.

 

[BruceMc]

As long as you got a good strong bolt action rifle the .257 Roberts can be pushed a little past the books loads. My load with the 115 Nosler Ballistic Tip is 49.0 grs of Reloder 22 in a winchester case. It gives a muzzle velocity of 3050 fps from my 24" Rem 700.

 

[sageadvice]

LAST EDITED ON Dec-23-11 AT 04:18AM (MST)[p]"It gives a muzzle velocity of 3050 fps from my 24" Rem 700."

Now yer cookin with peanut oil!

I'd work up a load with the accubond instead of the ballistic tip but still, sounds like a loading, if provided good accuracy, that i'd be happy with from that cartridge.


Joey


"It's all about knowing what your firearms practical limitations are and combining that with your own personal limitations!"

 

[roperlt]

I loaded some 115 gr. Berger VLD with 40 gr. H414. I have not cronographed this load, however it is sub moa and a coyote killin' machine so far...

Later, L.T.