Spike Camp

.257 Weatherby Mag Reloading

.257 Weatherby Mag Reloading
« on: April 06, 2010, 08:06:50 PM »
Hey everyone,

Another newbe to .257 weatherby mag reloading. I'm lucky to have just purchased my 2nd weatherby which is a .257 weatherby mark v fibermark. My other is a 300 wby mark v synthetic.

I have norma brass, 110 accubond, federal 215, and rl 22 that I'm going to start reloading with. Nosler #6 starts with 65.5 grains to a max of 69.5 grains. Was looking for a little help starting out seeing what was working for everyone else? Hopefully submoa out there with this combo? Any info, tips, would be greatly appreciated : )

This will be my first experience with accubond. I have hunted/shot paritions since 97 when I first bought my 300 wby and would like the good, bad, ugly about the two if your so desire to comment on them...

I plan to use my .257 for yotes, deer, antelope and as a backup to my 300 for elk god forbid something happen to the 300 during hunting season. Any stories about the .257 with elk, beer, moose would be greatly appreciated.

Re: .257 Weatherby Mag Reloading
« Reply #1 on: April 06, 2010, 08:12:34 PM »
Cpngrats on your new rifle. I have only loaded 100's so far in my 257, so no real advice I am afraid, It does like RL22 and H4831.

Good shooting,

James.
exhale and squeeze

Re: .257 Weatherby Mag Reloading
« Reply #2 on: April 14, 2010, 12:01:56 PM »
Congrats on your .257 purchase, I enjoy reloading for my .257 and my .300 Magnum. My problem is with the freebore of Weatherby rifles, do you use the standard over all length from the factory? What powders do you like in these magnums? Thanks.

Re: .257 Weatherby Mag Reloading
« Reply #3 on: April 14, 2010, 01:00:16 PM »
I am not the most experienced reloader but I start at what the factory ammunition is.Have had good luck so far with that.Some minor seating depth changes for different type bullets.For the 257 I like IMR 7828 and H1000.
Roger
Roger
Faster horses,younger women,older whiskey,and more money.

Re: .257 Weatherby Mag Reloading
« Reply #4 on: April 24, 2010, 08:21:32 AM »
RL-22 will work but runs a lot of carbon buildup.  I had good luck with 7828SSC and even better luck with Ramshot Magnum.  I really like the ball powders.
Gunsmith / NRA Instructor / CRSO / Life Member

Re: .257 Weatherby Mag Reloading
« Reply #5 on: May 22, 2010, 09:58:16 AM »
Seems like my day for posting on this issue.  I'm on my second 257 and neither do well with 100 gr bullets.  115 and 120  at 3340 and 3150 (RL22) they shoot tight as knot at 100 yds.   However, if anyone has a bullet, powder reload suggestion for a 100 grain...like you, I am all ears.
You know what you do.

sseden

  • ****
  • 455
    • View Profile
Re: .257 Weatherby Mag Reloading
« Reply #6 on: May 22, 2010, 10:11:43 AM »
257 good for deer and smaller, beyond that size and your problematic with the 257. Yea it will killem but the risk of loseing a wounded animal grows. I'm planning on using a 7mm Rem Mag 168 Berger for my Elk gun and load. Lots of guy like the 338's so i'd say a 257 would be light but it is a backup.
I BET On Berger Busters

Re: .257 Weatherby Mag Reloading
« Reply #7 on: May 30, 2010, 12:32:48 PM »
Sseden, you are probably right about the 338. I shot a 300 WBY for elk and if I had to do it again it would be a 338.  I would not use my 257 WBY for elk although I know people who do.  It is a little unnerving to hit an elk in the boiler room with a 300 and watch him run off while he is already dead.  Tough animals require tough calibers.  A 300 is the minimum for me.
You know what you do.

Re: .257 Weatherby Mag Reloading
« Reply #8 on: May 30, 2010, 12:57:56 PM »
fishdeep: My favorite load for the 257wby is 72 gr of rl22 and a 100gr barnes ttsx i dont remember the exact speed but it was over 3600fps. I know most manuels dont go that high with rl22 and 100 gr bullets but when i first started to use rl22 around 96 alliant used to list a max of 74gr and 100gr bullets. I found that 72gr gave the best accuracy one small raged hole @ 100yrds all day long.
Derrill
Good Hunting And Shooting To all
Derrill

Re: .257 Weatherby Mag Reloading
« Reply #9 on: May 30, 2010, 06:46:49 PM »
Fire, Welcome to club .257 Wby Mag. You may consider try shooting grouping with a variety of powders and various charges to find what your rifle likes. Use 0.5 grain incriments starting low & working your way toward Max. Nosler 110 grain Accu-bond is good bullet. It is great for varmints to large Mule deer. But if you want to be prepared for Elk (or larger game) develop a load YOUR rifle likes using 120 grain Nosler Partition or Swift A-Frame, as they are built for the thicker hide & more massive bone structure. My Mark V Stainless likes the 115 grain Nosler Ballistic Tip (under0.99 sub-moa) at3,400 fps (factory velocity) using 59.0 grains of IMR 4350, Federal 215 Primer.Test the IMR 7828 & IMR 4831 (some available in Short Cut -SC or SSC -Super Short Cut for better flow). If 110 grain Accu-bonds do not shoot near an inch or less at 100 yards, don't frett. Just try different bullet weights & look for measureable accuracy changes with each load (great practise too). Have fun

Re: .257 Weatherby Mag Reloading
« Reply #10 on: May 31, 2010, 04:35:03 PM »
Purplefox 66, 
That 3600 FPS with RL22 makes sense mathematically. I shoot 3343 with 69.2 grs. At 3343 I get 2-3 MOA at 100 yds.  With 120 grain bullets at 3100 FPS the same gun shoots 1 MOA.  Did you experience the same lack of performance at lower velocities with 100 Gr bullets?   
You know what you do.

Re: .257 Weatherby Mag Reloading
« Reply #11 on: June 03, 2010, 10:41:57 AM »
My Vaguard Sub-MOA did not seem to like 100 gr bullets and preferred the 110 gr Accubond and 115 gr TSX and Ballistic Tip.   It also seems to prefer IMR7828, Rmashot Magnum of H1000 pver RL-22.  With those combos, it lived up to its name.

Re: .257 Weatherby Mag Reloading
« Reply #12 on: June 03, 2010, 11:18:45 AM »
My SubMOA loves 64 gr. of H4831 under a 117 gr. Sierra BTSP.  It is a submoa load for my gun.

JohnP
JohnP
"If its too good to be true, it is!"

Re: .257 Weatherby Mag Reloading
« Reply #13 on: June 03, 2010, 04:13:09 PM »
Thanks for the last replies.  I thought my problem with 100 SPs was unique.  In any event I reloaded more of the 120 Hornady HPs with 62 grains of RL 22 and again shot under MOA 3 shot groups.  Not as rangy as I would like. I believe a 257 should be a 400 yd PBR shooter.  This 120 HP  load zeroed at 3 inches high at 100 yds flies about 20 yards short of that.  A 3600 fps 100 would be point blank to about 425 yds. Now that is tasty.  Might be time to try other 100 grains bullets than the Hornady SPs. 
You know what you do.

Re: .257 Weatherby Mag Reloading
« Reply #14 on: June 03, 2010, 05:12:29 PM »
Try Speer Hotcors 100gn. They shoot very well with my 257 and a good value in an excellent bullet.

James
exhale and squeeze