I’ve used STP in the past when rebuilding engines along side my dad and still use it to coat all internal parts when doing engine, gearbox or enclosed case components with high friction contact parts.
I actually never thought of trying it with resizing brass but will now!!
Old fashioned RCBS lube and roll on pad has always done well for me.
I do use Hornady One Shot spray when I have a bunch to do at one time.
Not a problem with either yet.
I loaded some 140 RDF in Creedmoor for a friend to cull hunt on his ranch in TX.
He shot some broadside double shoulder shots that left a 1 1/2 - 2" exit up to 250 yards.
He said lung shots over 150 didn't provide enough expansion.
6.5-284, PRC, GAP or SAUM should improve that terminal performance.
Simple version.
It's a flame chart.
Think of it as heat units given off when the same volume of different powders is ignited in the same space and environment.
That’s a lot of rounds to not find something worthwhile for an experienced shooter and hand loader.
I’d send it back with an explanation of what you found so far.
I had a similar problem with a top shelf barrel but I had it fluted it so they said sorry, I can’t warrant a barrel that has been...
Interesting but very sensible...I'm listening but can't comment on anything but the minimum expansion velocity required by the 212 ELD-X is right where you mentioned from your 308 velocity.
You are right on track!
7mm-08 is in the ballpark of the 7x57 (hence, the low recoil) but not with the 284 and 280 Rem.
Facts supporting your comments:
1) Plenty of brass and factory ammo for 280 and 7mm-08... less with 7x57 and very little to none with 284 Win.
2) HP of the 280 Rem and 284 Win...
My 308's shoot best with 168 and 175 SMK as well...
I love seeing those factory 308's shoot so well. My Rem Police and LTR shoot can shoot outstanding groups with 168 and 175 SMK's.
Me and a buddy took factory rifles to an F/TR match to wring them out.
I brought a factory Rem 700 Police 24" 5R...