I want temp stable powder for my next build, either 6x47 lapua or 243 win. Leaning on 243 win for now but that may change. Ordering the barrel this christmas so have plenty of time
Anyways, the enduron line seem to be in stock while the h4350 & varget never are around me
Since i dont have quick load was wondering which of their new powders are the best in your expierence or using some program
Bullets used will be 105 berger hybrid exclusively

My rifle, seems to not like IMR 4451 for some reason. Its a Rem 40x action, worked by Braun in Ohio. 6x47 lapua, 25" Kreiger bbl, 1-7" twist. The chamber is cut for 105 berger hybrids. The powder that works the best for this rifle is H4350, with that being next to impossible to find, RL17 is a very close second. With 105 hybrids with a .010 jump over 38.2 gr of RL17, I am getting about 3025 fps with less than 10fps deviation. That was at 500' elevation- 75 degrees temp. 100 yd groups are nothing special, maybe .5-.6 moa, but at 300 yards, it will shoot .25-.3 moa (.750 groups at 300 yds) and is still sub moa at 1000 yards when i do my part. With 88gr berger flat base bullets over 38 gr of RL17, jumping .025, it will shoot ragged hole groups at 100 and 200 yards. I love this round, brass life is great - 20+ firings so far, recoil is nothing, and is a great 1200 yard and under round for me. I know there is temp sensitivity with RL17 at big temp swings, I have shot from 40 degrees to 95+ and have not seen a noticeable difference. Good luck and hope this helps. Scott