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agazain Offline OP
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Finally, I have a Bob. Winchester 70 bull barrel stainless in a super Grade LA stock (???) Anyhow, UPS snapped the stock and I have a used standard stock in LA coming off Ebay. No Idea of the history but it shot two minimum load rounds just fine -- 40 grains H4831 SC and a 117-grain Hornady BTSP. Drilled out stock at break, inserted long eyebolt, JB Weld 5-minute epoxy and sawed excess off after cure begun. Finishing up in safe next to GoldenRod. Buehler mounts re-installed with Leupold 3-9x. Everything cleaned up good, including the bore.

Any favorite loads or suggestions?

Last edited by agazain; 04/29/19.
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H4350 with about any good 100 gr bullet. Most data is fairly low pressure, check out JBs "loads that work" article or Gun Gack book for more updated stuff. Should be able to go well over 3k with the 100s

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My Model 70 featherweight loves the 90 gr. Barnes X-bullet (no longer made) and a max charge of IMR 4350. Same goes for the 100 grain Nosler Ballistic Tip. I"ve got some old factory Hornady Light Magnum 117 gr. BTSP that shoot pretty well in my rifle as well, but it's factory stuff and not near as much fun!


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H-100V is the velocity champ in the Roberts. Not as temp stable as H-4350, just faster.

My Brux barreled, LA .257R shoots near one hole groups with the 100 TTSX over H-100V at 3,250 fps.

And, it's a killer.

What's not to like.

Check COAL, too long for SA, fine in a LA 700.

DF

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A few.

1) Sierra 75 grain HP, 44 grains of IMR 4064, WW +P brass or Remington brass, Fed 210M
2) As above, but 41 grains of 4064 and 90 grain Sierra BTHP
3) 100 grain ballistic tip or partition, WW +P or Nosler +P brass, Fed 210M, 48 grains of H4831SC. Note that one gun shot both very well, the other only shot the ballistic tip load well. In the first gun, 5 shots were going under 0.25 inch C2C at 100 yards.
4) 120 grain partition, WW+P brass, Fed 215 primer, 43.0 grains H414.

One thing I found .. .257s can be twitchy. I've had a couple that would shoot the 75 and the 120 well but wouldn't shoot any of the 85-117 grain bullets I tried with any decent accuracy.

Tom


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Here be dragons ...
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The target isn't much to look at, but the rifle sure is...

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Offhand?

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Originally Posted by Ole_270
H4350 with about any good 100 gr bullet. Most data is fairly low pressure, check out JBs "loads that work" article or Gun Gack book for more updated stuff. Should be able to go well over 3k with the 100s


I bought a rifle from Mule Deer, and used the 46.0 gr of H4350 'neath a 100 TTSX that he recommended, and woujda believe that it worked?


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I know, RIGHT???!!!! grin

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Along these lines, one of Cookie's photographer friends has an heirloom pre-64 in 257 and is on hard times. His local Cabelas offer was $1,700. I'd like to help him out, but just dropped a large sum on a travel trailer. If someone has interest, shoot me a PM, and I'll look at linking the parties up.


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Originally Posted by Dirtfarmer
H-100V is the velocity champ in the Roberts. Not as temp stable as H-4350, just faster.

My Brux barreled, LA .257R shoots near one hole groups with the 100 TTSX over H-100V at 3,250 fps.

And, it's a killer.

What's not to like.

Check COAL, too long for SA, fine in a LA 700.

DF

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Here's my .257, built by Ron Lampert, MN using a Brux barrel. It's LA, but one of the smoothest feeding bolt guns I own regardless where the round is placed in the box mag. Ron did a great job, tweaked the Walker trigger to perfection.

I fitted it in the Ti take off stock, converting ADL to BDL, glassing and free floating.

Pictured with different scopes, currently wearing the Conquest.

DF

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agazain Offline OP
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Wow! Maybe I'll post pics of my Bubba fix. Need to inlet the used stock some, then bed it. Still figuring out what I have. Thanks!

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Twins. The 75 grain V-Max are very accurate in both with 42-43 grains H4895, 3325 - 3350 fps. 115 grain Nosler Partitions are my favorite for Mule and Whitetail deer. 43-44 grains H4350 2845 - 2860 fps. Checked a new batch the other day and clocked in at 2875 fps.

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agazain Offline OP
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[img]https://i.imgur.com/XfNNIkI.jpg?1[/img]
Eyebolt from under grip cap to half-an-inch before rear action screw; drilled out first.

[img]https://i.imgur.com/RjEEHg7.jpg?1[/img]
JB Weld / 5-min epoxy surrounding eyebolt and oozing out shattered grip.

[img]https://i.imgur.com/iesAlNB.jpg?1[/img]
We'll see how she shoots factory next.

Last edited by agazain; 04/29/19.
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agazain Offline OP
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Believe she'll shoot!

[img]https://i.imgur.com/L81UuLK.jpg?2[/img]

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My Model 70 pre-64 likes 115gr Nosler partitions, second is 110gr Accubonds. I get over 3100 fps with several powders all slow burning. RL23,
Norma MRP, RL26, all gave over 3100 fps. Plus good accuracy . RL22 will get you over 3000fps. I,m sure there are others. My model has a fast barrel
buy the way.

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Originally Posted by GunTruck50

My Model 70 pre-64 likes 115gr Nosler partitions, second is 110gr Accubonds. I get over 3100 fps with several powders all slow burning. RL23,
Norma MRP, RL26, all gave over 3100 fps. Plus good accuracy . RL22 will get you over 3000fps. I,m sure there are others. My model has a fast barrel
buy the way.

I tried RL-26 in my Roberts, burned dirty, left granules of unburned powder in the chamber, couldn't chamber the next round. Shook'em out, chambered easily.

I think it's too slow to be optimal for that round.

H-100V is the fastest Roberts powder, IME.

H-4350 works great with heavies, just slower.

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Never had any of those problems, but RL26 was least accurate. Norma MRP was my favorite and RL23 was a close second.
I used RL22 for a while, but found the MRP was better, you have to use about one more grain of powder. Plus it likes heavier
bullets better than the RL22. I used a lot of MRP in my 270 with 150gr partitions and RL 23 with 140gr. Also MRP in my 7mm Mag
With 160gr Accubonds or Trophy Bonded Tipped.

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MRP is claimed by some to be the same as RL-22, maybe made to a higher standard.

There can be lot to lot variation, maybe more with RL-22 than MRP. Even if they are nearly the same, there can be slight differences in burn rate and data.

RL-23 is said to better than ‘22. I have a big jug of MRP, some RL-23, doubt I’ll buy any more RL-22.

Don’t think RL-26 is an optimal Roberts choice. Too slow. Great in 7RM and such.

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115 BT with IMR 4831 in Nosler cases. Several finicky Bobs would shoot it quite well.

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