I took pa hog's advice and floated the barrel.
That turned it into one of those new rifles that are no fun. Talk about not fussy about what it is being fed.
I shot ten groups with 5 different loads, and 8 were sub minute, with one being a near cloverleaf.
I shot two groups with the Federal 150 grain Power Shok factory loads, both about 3/4 inch.
Two with Remington factory 150 grain Core-Lockt, again, about 3/4.
Two with my 700s favorite hand loads, a near clover leaf, and a 2 1/2 inch group with a called flyer. The other two were almost touching.
Two with the same hand load altered with 3/10ths grain less powder, one slightly over 1/2 inch, and the other an inch and 1/4 (probably my fault).
Two with the hand load altered by 3/10s more powder, one slightly under 3/4 inch, and the other slightly under an inch.
I think the rifle is a keeper.
The wind was nil, and I shot from the Steady Rest (brand name) I use for prairie dogs.
Looks like the loads that my 700 groups best with will work for this one too. That is, 150 grain Hornady SP, Remington case, Winchester primer, 58.7 grains of IMR 4350, for 2940 (measured).