load for 257 weatherby mag,

[AR_deerslayer]

guys can anybody tell me a good load for 257weatherby mag , I have imr 4350 and I bought some 115gr, nosler accubonds, got large magnum primers and a bunch of once fired weatherby brass, .Im still pretty new to all this , I will be supervised but curious if anyone has a good load worked up with these combos?

 

[SJB358]

guys can anybody tell me a good load for 257weatherby mag , I have imr 4350 and I bought some 115gr, nosler accubonds, got large magnum primers and a bunch of once fired weatherby brass, .Im still pretty new to all this , I will be supervised but curious if anyone has a good load worked up with these combos?

I don't have any data for the 110gr AB or 115 PT, but I imagine someone will be along shortly to assist. Sounds like you have a good start to your loads though. Is 4350 the only powder you have for the 257? Scotty

 

[FOTIS]

RL 22 is where it is at

 

[Kodiak]

Try RL 22 with Nosler's 100 gr. BT and H1000 with the 110 gr.AB, using f215GM primers with both. My best groups were with a max. load in my rifles.

 

[FOTIS]

IMR 4350 will work but you will never realize the true capability of the round. RL 25 also rox!

 

[AR_deerslayer]

thanks yall Im gonna try the IMR4350 with a few rounds, and the 115gr. accubonds, can anyone tell me what my coal needs to be and min max on powder??

 

[FOTIS]

75 GR. HDY V-MAX Hodgdon H1000 .257" 3.250" 76.0 3517 37,700 CUP 80.0C 3649 42,000 CUP
75 GR. HDY V-MAX Hodgdon H4831 .257" 3.250" 71.0 3652 45,200 CUP 75.0 3841 51,900 CUP
75 GR. HDY V-MAX Hodgdon H4350 .257" 3.250" 65.0 3715 43,100 CUP 70.0 3905 51,800 CUP
75 GR. HDY V-MAX Hodgdon H414 .257" 3.250" 65.0 3717 44,200 CUP 69.5 3971 52,400 CUP
85 GR. NOS BT Hodgdon H1000 .257" 3.250" 76.0 3548 44,600 CUP 80.0C 3665 47,900 CUP
85 GR. NOS BT IMR IMR 7828 .257" 3.170" 74.5 3775 53,500 CUP
85 GR. NOS BT Hodgdon H4831 .257" 3.250" 68.0 3498 45,000 CUP 72.0 3664 52,200 CUP
85 GR. NOS BT Hodgdon H4350 .257" 3.250" 63.0 3544 44,400 CUP 67.0 3739 51,600 CUP
85 GR. NOS BT Hodgdon H414 .257" 3.250" 62.5 3543 44,800 CUP 66.5 3746 51,700 CUP
90 GR. SIE HPBT Hodgdon H1000 .257" 3.150" 76.0 3494 43,800 CUP 80.0C 3671 50,000 CUP
90 GR. SIE HPBT Hodgdon H4831 .257" 3.150" 67.0 3420 44,400 CUP 71.0 3611 52,500 CUP
90 GR. SIE HPBT Hodgdon H4350 .257" 3.150" 62.5 3524 46,600 CUP 66.5 3685 52,400 CUP
90 GR. SIE HPBT Hodgdon H414 .257" 3.150" 62.0 3458 44,000 CUP 66.0 3671 52,200 CUP
100 GR. SPR SPBT Hodgdon H1000 .257" 3.200" 73.0 3410 45,800 CUP 78.0 3575 52,400 CUP
100 GR. SPR SPBT IMR IMR 7828 .257" 3.200" 73.0 3655 53,100 CUP
100 GR. SPR SPBT Hodgdon H4831 .257" 3.200" 64.0 3312 45,800 CUP 68.0 3462 52,500 CUP
100 GR. SPR SPBT Hodgdon H4350 .257" 3.200" 59.0 3312 44,900 CUP 63.0 3500 52,400 CUP
100 GR. SPR SPBT Hodgdon H414 .257" 3.200" 59.0 3294 45,300 CUP 62.5 3449 51,800 CUP
115 GR. BAR XFB Hodgdon H1000 .257" 3.250" 67.0 3147 50,000 CUP 71.0 3265 52,700 CUP
115 GR. BAR XFB Hodgdon H4831 .257" 3.250" 60.0 3030 46,200 CUP 64.0 3170 52,000 CUP
115 GR. BAR XFB Hodgdon H4350 .257" 3.250" 56.0 2988 46,900 CUP 60.0 3188 52,500 CUP
117 GR. HDY SPBT Hodgdon H1000 .257" 3.220" 70.0 3169 45,200 CUP 74.0 3321 51,800 CUP
117 GR. HDY SPBT IMR IMR 7828 .257" 3.220" 70.0 3390 52,600 CUP
117 GR. HDY SPBT Hodgdon H4831 .257" 3.220" 62.0 3099 44,800 CUP 66.0 3252 52,300 CUP
117 GR. HDY SPBT Hodgdon H4350 .257" 3.220" 57.0 3112 46,000 CUP 60.5 3266 52,000 CUP
120 GR. SFT SP Hodgdon H1000 .257" 3.220" 69.0 3103 45,700 CUP 73.0 3256 51,800 CUP
120 GR. SFT SP IMR IMR 7828 .257" 3.220" 69.0 3325 53,000 CUP
120 GR. SFT SP Hodgdon H4831 .257" 3.220" 61.0 3013 44,600 CUP 65.0 3184 51,800 CUP
120 GR. SFT SP Hodgdon H4350 .257" 3.220" 56.0 3000 44,400 CUP 60.0 3189 51,800 CUP

 

[AR_deerslayer]

Guys -i was wrong they are 110 gr accubonds.gonna try 62gr of imr 4350 and 63gr and see what happens ....I'm not lookin for fastest just a good hunting load that will shoot 1inch at 100 ..my gun likes the 100gr factory weatherby spitzers ..shot 1/2 at 100

 

[Powerstroke]

I had good luck with IMR7828 & Viht N-165 with the 110AB's. I've since switched and as Fotis stated - RL-25. I'm feeding it 70grs of it with 115 B-tips.

 

[AR_deerslayer]

I will get some rl25 ...can somebody show me min and max with the 110gr AccuBond

 

[Kodiak]

Nosler's #6 manual lists RL25 for the 115 gr, bullet as 68 to 72 grains. When loading for the 110 gr. bullet, that should be a place to start. Personally, I have not tried that powder.


Jim

 

[cloverleaf]

110 AB's and 257 Roy....Oooooh somthin' long ways away is gonna end up with a hole in it! :lol: Good luck! let us know how it works out. CL

 

[efw]

IMR 4350 will work but you will never realize the true capability of the round. RL 25 also rox!

I haven't tried RL-25, but -22 ROCKS. I've got a pound of IMR-7828 that I'm going to test this winter, too.

I'd use the Nosler data for 115 NBTs as a starting place if I were you. Another good couple of good places for start data are the Hodgdon & Alliant reloading data centers.

IIRC (and you'd want to check on this) Sierra lists 66.5 gr IMR-4350 as max w/ 100s. As you've likely surmised, it is a bit fast for wringing out the best this cartridge has to offer, although I used 66 gr & 100 gr Sierra Game Kings to fire form 7 RM brass and had great results accuracy-wise, though I didn't chrono them.