260AI fire forming load

[SJB358]

Nice. I just noticed you said H4831 vs H4831SC. Let me know if you want it ran as well. That rifle should be slick with 140 ABS

 

[Creedmore]

Thanks, but not necessary. I haven't noticed any difference in regular vs. SC, in other rifles I've tested.

I built this rifle specifically with the 129gr ABLR in mind, whenever they finally hit the shelves. Picked up some 140 AB overruns a few weeks ago from SPS, we'll see what they do in the mean time.

 

[SJB358]

No worries, neither have I. Maybe a little more compressed if not dropped from a tube. Good luck, the 129's should be AWESOME in that 260.

 

[Creedmore]

Got some fire forming done and started a load work-up this morning. The barrel is still very green, with only 70 rounds down the tube.

She did not like the 140AB, but these 120gr Ballistic Tips are very encouraging. (that's a 1" dot)

 

[Creedmore]

I shot this group on Saturday. If the dummy on the trigger could control his breathing, this would have been an awesome 200yd group. Regardless, I think I've found the secret combination with this bullet.

Same load, just tinkering with seating depth.
50.0gr H4831
Fed GM210M primer
120gr Nosler Ballistic Tip
Seated 2.220" ogive, 0.035 off the lands

 

[DrMike]

That is getting mighty close to bragging size. Good group.

 

[SJB358]

Yeah, that's a great looking load right there! Way to go CM!