The lapua round has been really easy to load for. The 3 we have are sporting .170 freebore. Here are 3 rounds that all shoot great in all 3 rigs.

41.2 IMR4451, 140 vld, cci450
39.8 H4350, 147 eld, cci450
37.7 Varget, 135 classic, cci450

That 135 load is sub .30 for 5 rounds in the 2 I shoot it in. And it held up well per Don's comment at 1000 too. I'd shoot or hunt any of those 3 loads with no worries. Got a muffler on all 3 and can't imagine a much more fun round to shoot or hunt with.

Don bailed me out on the Varget stash. Had a bottle of IMR4166 that was going to get tested but instead started loading up Varget and 135s for this falls hunts.