The Accurate Reloading Forums
257 Roberts 100 gr E-Tip

This topic can be found at:
https://forums.accuratereloading.com/eve/forums/a/tpc/f/6711043/m/1911034921

22 March 2010, 04:18
JD338
257 Roberts 100 gr E-Tip
I quick tested the 100 gr E-Tip in my M700 Classic 257 Roberts and can share the following data with everyone.

IMR 4350 loaded to a Max charge with 41.5 grs, R-P case and Federal GM210M primers. Avg MV 2779 fps, ES 40, SD 20. Accuracy was 2.05".

RL 19 loaded to a Max charge with 46.0 grs gave an Avg MV 3053 fps, ES 38, SD 20. Accuracy was 1.772". The COL was 2.900" and I will have to work with this to improve accuracy.

I shot into water jugs at 100 yds, MV was 3042 fps and the bullet was recovered sticking out the back side of jug #5.



The recovered bullet weighed 98.7 grs and measured .584" diameter and the length is .635".

I will update with accuracy improvements.

JD338
22 March 2010, 06:23
vapodog
Thanks for the report.....well done.

That bullet is classic in performance....just what most shooters would like!


///////////////////////////////////////////////////////////////////////////
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill
22 March 2010, 08:15
Mort Canard
JD338,
Good report, but I am confused. You said that 41.5 of IMR 4350 was a max. load when the Hodgdon manual lists the max. loading for a 100gr. bullet at 44.5gr. That would give 2930fps velocity. Sounds like you could shovel a few more grains into those 'bob cases. bewildered


*******************************************************
For every action, there is an equal and opposite malfunction.
22 March 2010, 08:41
JD338
Mort,

The Nosler E-Tip has a long bearing surface and pressures can spike very quickly. Nosler states that their Mid-load data is considered MAX for the E-Tip.

JD338
23 March 2010, 17:28
perry
That accuracy sucks. I have 2 Classics and they stack bullets on top of each other. I have had great results with the 100gr TSX loaded to 3050 fps. I use IMR 4064. My classics seem a bit finicky with loads but once I found the powder they liked the groups turned into holes.

Perry
23 March 2010, 17:39
Peter
JD your accuracy results are in line with my experience with my Ruger Ultralight in 257R ie. 1 1/2 to 2". I have not tried the E tip yet. What are they supposed to bring to the table compared to the other poly tip Nosler bullets?
Perry I too have had better results with the TSX bullets, in my case, 115grain. I favor the heavier bullets.
Thanks, Peter.


Be without fear in the face of your enemies. Be brave and upright, that God may love thee. Speak the truth always, even if it leads to your death. Safeguard the helpless and do no wrong;
24 March 2010, 02:19
JD338
Peter,

The E-Tip is a monolithic copper bullet that offers tremendous weight retention and can be used in pb free hunting areas of CA.

JD338
24 March 2010, 03:27
perry
quote:
Originally posted by JD338:
Peter,

The E-Tip is a monolithic copper bullet that offers tremendous weight retention and can be used in pb free hunting areas of CA.

JD338




So is the TSX.

Perry
24 March 2010, 08:17
JD338
The 100 gr BT shoots .5", the 115 gr BT shots .6" and the 110 gr AB shoots .7" from my M700 Classic.
I hope to get the 100 gr E-Tip to shoot sub MOA by playing with the COL.

JD338