Like Ned said bullet way down in case With the 88s, you need a very long freebore to seat them optimally...IMO, somewhere between ~0.275" to 0.300". With a chamber throated
I loaded 5 rounds in new Lapua neck turned brass with 23.4 Varget, 23.7 & 24 gr I seated the the 23.4 gr into lands 10 k the others with a 10 jump
was quite surprised with jam 10k with 23.4 gr Varget but I was stunned how groups opened up with a 10k jump never seen this before.
I had given my friend 10 bullets to try in his Savage Model12 30" Bartlien 4 grove he loaded 23.5 gr and they shot about 3/4" to 1.25"
My gun is a Barnard S with a 1/7 twist 5r at 30.5" both guns use JGS Reamer
Will do some more testing with bullets kissing and 10k into rifling would be nice to get them to work good with same BC as 90 gr Bergers could work out to 1000 in f class, not real optimistic on Hornady bullets but hey maybe there better made now ??
manitou
Did not chrono loads but would estimate 23.5 2740 fps will do next week aS I AM LOADING AS WE SPEAK WITH A 5 TO 1 K JAMVery timely report! I just had 500 of them arrive on my porch, and plan to test this weekend.
You get any velocity numbers with your testing?
So just tested where the lands are with this bullet, and looks like I'm at 2.060 with the Hornady tool. That puts me at 2.614 OAL at the lands.
I had a .170 freebore about 2,000 rounds ago. The throat looks amazingly good in the borescope, but the last time I checked the 90gr Bergers needed to be seated our ~.040 further to hit the lands.
I'm going to load up and do seating depth testing first, and will use 23.5 of Varget like you (I'd been running 24.2-24.7 with the 90gr VLDs).
How did you do going forward with the 88 Hornady ELDMJust a follow-up, I shot 50 of them at 300y, and could get them to group real well at certain seating depths for 4 shots, but it would seemingly throw a flier ~3" the rest of the group. I don't have a problem accepting blame for pulled shots, but some of these weren't the shooter. Has me thinking the 'bulk packaged' bullets are 2nds or something like that; saw about 1gr of variance in the ~15 or so I weighed.
I could chase it further, but think I'm going to rebarrel the rifle and save the components for the next go-round.
Just to throw my 2 cents in I’ve tried the 88’s in a 223AI I had built for the 85.5 Berger with an OAL of 2.485
With a stiff load of H4895 in a 24” barrel I was getting 2825 fps. 7 twist barrel. No issues with jackets and accuracy was good. The Berger shot better as expected but the Hornady is certainly a good choice as well.
A very famous shooter told me that the ELDMs don't group as small at short range but shoot the same scores at long range due to the better BC.