Hello all! pardon the intrusion please. but I have a 257 barrel that's an 1/7.5 twist on the way. and I'm wondering if there were any loading situations I need to avoid? Thanks for your help and any information you may have .…..and 110 AB …. Must be bedtime
257 weatherby…. 7828 or retumbo
- Thread starter summitsitter
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H1000 is my preferred powder for 257 Bee. If you have both the 7828 and Retumbo, try both. I would lean to Retumbo personally as o think it is more temp stable, but I have 2 rifles that like 7828 alot.
I personally have not used Retumbo, but know alot of people really like it.
I personally have not used Retumbo, but know alot of people really like it.
No retumbo but h1000 re 26 and. 23 and 7828both long and short cut also lots of re25
Both barrels for my 257 weatherby liked H1000.
The factory barrel was a 1:10 twist and shot the 115gr Berger very well with H1000. The new barrel is 1:7 twist and shoots the 128gr Hammer and 135gr Berger very well with H1000.
RL23 would be good too most likely.
std7mag
Well-Known Member
I found acceptable loads with 7828, and N555 with 115gr Ballistic Tips.
Alliant used to have data for 175gr bullets and RL33 in 7mm Rem Mag.
I've never seen/heard of using it in 257 WBY.
Alliant used to have data for 175gr bullets and RL33 in 7mm Rem Mag.
I've never seen/heard of using it in 257 WBY.
Summitsitter: I would suggest the Retumbo over 7828.
I have been using RL-33 in my 257 ever since it came out. It surpasses Retumbo and RL-25 for velocity and is accurate. I have a custom reamer with a shorter throat and a 1 1/2 degree leade. Now on the second SS 3 groove Lilja barrel. First was 28" this one is 27.5". It is a no turn neck and shoots moly coated 115 Bergers @ 3675 fps. It is an awesome flat shooting death ray for coues wt!!!
There have been 9 barrels done with this reamer to date. All are 1 in 10 twist. Several friends own the other rifles. All rifles are using the 115 berger. Most use RL-25, one uses H-1000. To date my rifle and the others have taken 33 coues wt, 8 elk and 2 antelope.
I recently acquired a new 24" takeoff tikka barrel in 25-06 for $75, which I rechambered. It is using IMR 7828 with the 115 Bergers. Accuracy load is 68 gr of SC IMR 7828 115 VLD for 3280 fps. I have a ton of RL-33 and will try it eventually for a comparison to the longer barrel.
I have been using RL-33 in my 257 ever since it came out. It surpasses Retumbo and RL-25 for velocity and is accurate. I have a custom reamer with a shorter throat and a 1 1/2 degree leade. Now on the second SS 3 groove Lilja barrel. First was 28" this one is 27.5". It is a no turn neck and shoots moly coated 115 Bergers @ 3675 fps. It is an awesome flat shooting death ray for coues wt!!!
There have been 9 barrels done with this reamer to date. All are 1 in 10 twist. Several friends own the other rifles. All rifles are using the 115 berger. Most use RL-25, one uses H-1000. To date my rifle and the others have taken 33 coues wt, 8 elk and 2 antelope.
I recently acquired a new 24" takeoff tikka barrel in 25-06 for $75, which I rechambered. It is using IMR 7828 with the 115 Bergers. Accuracy load is 68 gr of SC IMR 7828 115 VLD for 3280 fps. I have a ton of RL-33 and will try it eventually for a comparison to the longer barrel.
LBEdgin
Well-Known Member
Mine does ok with 7828, but it shoots H1000 like a laser.
DLJ6
Well-Known Member
Tagging on here. I love the 1954 Roberts I grew up behind so am going to acquire its big brother. Just ordered 50pcs of Weatherby brass and will likely pick up a model 307 within the next two weeks. Would like to try the 101 LRX and 115 Bergers.
Never was able to get great accuracy from 7828 and the QuarterBee. RL22 is the Bees' knees so to speak with 100 to 115 grainers anyway.
