As I mentioned earlier in this thread ,almost classical definition of a faster burning powder than Retumbo.That's interesting that IMR 8133 is so much slower than H1000 but it showed more pressure at the same speeds?
As I mentioned earlier in this thread ,almost classical definition of a faster burning powder than Retumbo.That's interesting that IMR 8133 is so much slower than H1000 but it showed more pressure at the same speeds?
I would have thought the 8133 would have produced more velocity than the H1000
Have you tried retumbo in yours yet to compare all 3? And curious if the 8133 acts faster in Lapua bolt face cartridges with powder charges in the 90-100gr range? It seems that's where people have been liking the results with it.I tried it to get more velocity since most ppl have seen an increase with 8133. I guess it didn't work in my gun.
Your h1000 load looks real good. I guess that I would probably stick with that. Seems like the 8133 was finicky for you but it looks like you might have been on a node somewhere between 88 and 88.5 grains of 8133 if that's two in the same hole I'm seeing. I know there's a lot of schools of thought on this sort of thing but I've found nodes in multiple rifles that were somewhere between 2940 to 2960fps. Possibly 88.3 grains of 8133 may put several in the same hole for you.I've only shot a few rounds at 225 yards to find max pressure and determine velocity. The 8133 had slightly more pressure and slightly less velocity in my gun. The 8133 is top picture and h1000 is on bottom. My gun likes the h1000.
300 rum
Nosler 1x brass
Fed 215M
Berger 230
29" barrel
View attachment 126630
View attachment 126631
I personally believe the 215 is a better bullet for the 300 win mag than the 230.Anybody else got any 300 win mag data for 8133? Waiting on all my supply to come in before I give it a whirl. Has anybody tried it with the 230's? Be interesting to see what the 300 win will do with it.
That's great and similar to mine. Good to see others in the same ball park as me. I posted earlier but I ended up at 78.1 at .010 off the lands in my Ridgeline. This gets me teens for ES and 2960 fps avg. I start to see pressure when I was loading closer to 79gr.short one at 74 came in at 2650 ft per second discontinued jumped up to 76 shot right at 2780 only shot one went to 78 es of 20 avg fps of 2940
79seen pressure
Went home and loading @ .2 grain increments from 78 to 78.8
I think I can fine tune her and then we'll have to go into hot and cold temperature extreme testing