.257 weatherby mag and RETUMBO

[cohntr6]

i GOT A HOLD OF SOME RETUMBO thinking it would work in my .257 weatherby

and am having a hard time findng loads.

I have Barnes 80 gr. TTSX, 100 TSX, 110 gr. ACCUBOND, and 117 SST.

Other than having 120gr. partitions I think I have the bullet weights covered.

I do have ImR 7828 ssc that I will try but want info on retumbo.

I am aware of the H1000, H4831 and H4350 loads.

Anybody?

 

[POJV]

Here is one load found, not tested by anyone other than the author.

Phil

I can pm you the link it you would like.

 

Load 3273 in caliber .257 Weatherby Magnum

 

LoadID 3273

Bullet Nosler Ballistic Tip

Bullet Weight 100 grs

Powder Hodgdon's RETUMBO

Powder Weight 76.5 grs

Primer Federal 215 Magnum Match

Brass Make Norma

Barrel Length 26 (inches)

C.O.L 3.17 (inches)

Velocity 3650 fps

Group 100 yds .488 (inches)

Submitted By Jerry Lowery

Gun Info Ruger M77VT

Comment .25-06 rechambered to .257 Weatherby Magnum Just under 3" high at 100, dead-on at 300 yards, 7" low at 400

 

Legend

 

 

 

 

[Red Rabbit]

some googling for you:

 

http://www.reloadersnest.com/frontpage.asp?CaliberID=35

http://www.weatherby.dk/forumdisplay.php?f...desc&page=3

 

http://forums.cabelas.com/showthread.php?t...ghlight=retumbo

Looking for suggested load data for Nosler 110 Accubond with Retumbo powder. Only data I have is from the Speer #14 reloading manual, shows the following:

87 gr bullet - 74 - 78c grains retumbo

100 gr bullet - 71 73 grains retumbo

120 gr bullet - 65 - 69 grains retumbo

With these guidelines I could probably start out with 68 - 71 grains Retumbo with the 110 accubond.

[cohntr6]

Thanks!

 

[roninflag]

you don't say the model .257. i would use primers other than the 215 if i was not shooting in belwow zero temps. a rem 9 1/2 m or a wlrm cci250. i would use h-4831 and 115 bergers or bal tips.