- Mar 30, 2013
You will find IMR7977 is similar in performance to H1000 and IMR8133 is similar to Retumbo. I've used all of them in my 7 LRMs and they all work very good. The slower bulkier powders like 8133 and Retumbo perform better with the heavy for caliber bullets like the 180-195s. I haven't used it but N565 and N570 will likely be good to try. If you have checked them I would weigh some of the ABLRs before trying them for consistency out past 500 yards. I never could get the 175s to shoot good out past 600 without carefully weight sorting them.Recently purchased a Fierce firearms 28 Nosler . I have 40 rounds down the barrel, did break in exactly as suggested by MFG. Now I'm looking to start load development. This gun will be used for hunting elk out to 800 yards. My goal is to get a good hunting round (168 - 175 grn) shooting 1/2 MOA or less at 3100 fps or greater. I currently have some Nosler 168 ABLR, Hornady 175 ELD-X, and soon some 175 ABLR. For powders I have RL 33, Norma 217 and US869 (retumbo and H1000 are hard to find in my area, no stores have in stock currently). I don't have the time to go perform a ladder test on all the different powders and bullet combination. I'm looking for suggestions on what people are seeing for the best powder for bullets in this weight range. This will be my first attempt at the ladder test to find the best powder charge. Also how will temperature affect a ladder test on these powders? I will be doing this in 30 degree heat range, if I'm hunting in 60 degree range will the load totally change?
Thanks in advance for advice!