That's a pretty impressive load in the std. 7 Rem mag!Data on imr 8133 is tough to find so I'll add my experience, hopefully it helps someone. I ran h1000 for a long time and got good velocity but supply was running low. For 7mm rem mag shooting 162 eldm Settled on 74.8 gr imr 8133 got me 3245 and still not pressured out. 26" proof 8.4 twist barrel