Painless load development (mine)

[huntnful]

It might be close in a SAAMI chamber or loaded to SAAMI spec OAL. I never loaded N565 before I had mine throated out but I know the 143 was stuffed pretty deep in there.

My old gun was SAAMI and I don’t remember really compressing powder with this load.

At least nothing like when I’ve actually compressed a load and crunched kernels on the way in lol.

 

[Alpha Echo]

There's always the electric toothbrush vibrating the case trick. Combine that with the Forster drop tube funnel and you get much more case capacity before compression, IME.

 

[huntnful]

Tested 109 LRHT’s in the SAAMI 6 creed with 42gr. H4350. 2.857 COAL. Or about .020 off.

They aren’t very far down in the case neck (bearing surface is maybe 1/2 way down), so I single fed 5 and then mag fed 5 to see if it would make any difference with dispersion from the bullets hitting the feed ramp and possibly getting a little runout. It didn’t affect anything.

Single fed


Mag Fed


10 shots overlayed into a .57 MOA group with an ES of 28.



No actual load work, other than testing N555 as well, which didn’t shoot as small of groups but did have a lower ES. I’ll personally take the smaller groups vs. lower ES all day.

This is also a 26” carbon benchmark and the gun weighs 10lbs 4oz.