Am I the only guy with a 257 Roberts AI that doesn't like IMR 4350 with 117 gr bullets?

It loves H414, RL-19 & RL-22 but not IMR 4350 or H4831sc.

It looks like you might be the only one. I have not shot 117gr bullets. Mine likes H4831sc with 100gr and 120gr bullets. RL-19 was going to be my next stop if the H4831sc did not work out.

you should try R-19, I think you'll like it

Mine don't like 117 grain bullets! Mine also don't like slow powder!
IMR 4895 and 115 grain Combined Technologies are what mine chose.

Me thinks I may try some Barnes bullets next though.

Guns can be like some women -- they can't tell you what they want; but they don't hesitate to tell if they don't like it; until you find just the right thing

I have the standard Roberts, and IMR4350 is horrible in my rifle.

I've done very well with RL19 and either the 117 interlock, 115 Ballistic tip, or 100TTSX.

I haven't found a bullet yet that shoots well with the 4350 out of this rifle.

quote:

Guns can be like some women -- they can't tell you what they want; but they don't hesitate to tell if they don't like it; until you find just the right thing

Well said

One bullet my gun really likes is Hornady's 117 RN, haven't killed anything with it yet but I figure it will be the perfect round for when I hunt whitetails in MN out of a tree stand

Try 115 gr Nosler BT or 120 Nosler PT with either 4831.

Alan

Are you using flat base or boattails?
I've found the flatbased bullets in my standard Roberts to be the most accurate. Mine's not overly particular and is pencil barraled so I don't shoot long strings and it shoots good with 117 & 120gr Hornady Interloc and Sierra 117gr Pro Hunters. I've tried IMR 4064 with varmint bullets as well as Varget and IMR4895, and tried IMR 4895 up to 100gr bullets. With 100gr and heavier I've tried RL19, H4831 (&sc), RL22, I7828, and of course IMR4350.
If you have any FB bullets in the same weight class try a few. Mine shoot's the 120gr Hornady FB bullets driven near top end by RL22 quite well. Nate

I guess I qould ask what the barrel twist rate is. I lot of older 257 cal rifles had too slow of rate for the heavier bullets

You might give H-414 a try as well as RL-19.

quote:

Originally posted by p dog shooter:
I guess I qould ask what the barrel twist rate is. I lot of older 257 cal rifles had too slow of rate for the heavier bullets

That would be my guess.

Larry Gibson

I like to load 110 Accubonds over RL-15 for my daughter's 257 Roberts. They do shoot nicely and knock animals down!

44.0 gr. H4350, 117 SGK. 2,850 fps and 3/4" accuracy.

I get about 1.2" groups with a 117 Horn. SST.

I don't know why I ever bothered to try and do better...but I will keep trying. I have this box of 117 BTSP's in the garage I've been meaning to test...

Still, 47.0 H4350 with a 100 SGK gives me 3,050 fps. 1" accuacy.

46.0 H4350 with a 100 TSX gives me 3,000 fps on the button and 1" accuracy.

The Bob. It's not just for speculation! It's truly one of the all-time greats.

Try some H-380 It works very well in my 257 Roberts Imp. with both 87's and 120 grn bullets.