IMR 8133 Information

[mmac]

Well, I haven't been able to find any Retumbo and have now read that this might be a newer and better Retumbo. Temp stable, less copper fouling and more speed. Has anyone used it yet to validate those claims? I was going to try it in 264 Win as they say it it perfect for that, but also in the 7mm RM and 300 Winny. Any feedback so far?

 

[freebird]

I use IMR 8133 for my 300RUM. So far have had great luck with it. I tried because my supply of N570 was down to 2 pounds. I am loading 92grs of IMR 8133, pushing 215 Berger’s at 3140 FPS. At 200 yards was practically getting one hole groups. i really haven’t played much with retumbo. Have you checked out either RE26 or RE33

 

[cmahoney]

I use IMR 8133 for my 300RUM. So far have had great luck with it. I tried because my supply of N570 was down to 2 pounds. I am loading 92grs of IMR 8133, pushing 215 Berger’s at 3140 FPS. At 200 yards was practically getting one hole groups. i really haven’t played much with retumbo. Have you checked out either RE26 or RE33

Have you guys tried H1000? Wondering if this is a better option


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[mmac]

I haven't checked out RE26 or RE33. I had plenty of Retumbo until I realized I didn't.... I will look into those. I see a lot of comparisons with RE33 and 8133 to Retumbo.

CMA- I have tried H1000, it does well in the 300 Win Mag on the 180's for me, but I like the heavier bullets and doesn't get as much speed for me on the accurate loads.

 

[freebird]

IMR 8133 is a tad faster burning then N570 according to the burn chart I have. This Saturday I plan on spending quite a bit of time behind the trigger testing more loads with IMR 8133, N570 and RE33

 

[cmahoney]

I haven't checked out RE26 or RE33. I had plenty of Retumbo until I realized I didn't.... I will look into those. I see a lot of comparisons with RE33 and 8133 to Retumbo.

CMA- I have tried H1000, it does well in the 300 Win Mag on the 180's for me, but I like the heavier bullets and doesn't get as much speed for me on the accurate loads.

Thanks! I’ll pick some up


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[Ryan Avery]

Out of my RUM with 230 bergers

8133 3030 ish
H1000 2950 ish
RL 26 3050 ish
570 3070 ish

 

[cmahoney]

Out of my RUM with 230 bergers

8133 3030 ish
H1000 2950 ish
RL 26 3050 ish
570 3070 ish

Which one was the most consistent?


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[Ryan Avery]

Hard to beat H1000 for Consistency. But 570 is my favorite. But it's like unicorn balls.... rarely seen. haha

 

[cmahoney]

Hard to beat H1000 for Consistency. But 570 is my favorite. But is like unicorn balls.... rarely seen. haha

Thanks Ryan, 570’s on my list too.


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[elkguide]

Hard to beat H1000 for Consistency. But 570 is my favorite. But it's like unicorn balls.... rarely seen. haha

I'm sure that I'll see that unicorn first!

 

[freebird]

My unicorn will be here Monday. All I can say is keep checking reloading websites....Its starting to filter in.

 

[mmac]

I'll look for the 570 and RE33 then. I have some 8133 showing up Monday to play with.

 

[nhyrum]

I know this post is a little dead, but I'm interested in the 8133 Vs n570. I bet my local place can get 570, and I know they have 8133.iplan on shooting 230 berger's or 200 cutting edge solids out of a 300 rum till I shoot it out, then rechamber to 338 edge. Would either work well in both cartridges? Consistency is key, of course, but I plan on shooting up to two miles with it, eventually. Maybe just 1.5

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[Ryan Avery]

I know this post is a little dead, but I'm interested in the 8133 Vs n570. I bet my local place can get 570, and I know they have 8133.iplan on shooting 230 berger's or 200 cutting edge solids out of a 300 rum till I shoot it out, then rechamber to 338 edge. Would either work well in both cartridges? Consistency is key, of course, but I plan on shooting up to two miles with it, eventually. Maybe just 1.5

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Both powers will work just fine. The 570 will be faster.


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[Yote Klr]

Don't be afraid of Reloder 33. I have not seen it to be incredibly temp sensitive at all. It is very close burn rate to N570.
The reason I mention RL33 is it's readily available...unlike N570 and Retumbo recently, and I can't get 8133 to shoot in anything.

 

[mmac]

Thanks, I will find a pound to try. I found a great load of 8133 in the 264, but nothing else. How would the reloader 33 work for a 300 Win Mag?

 

[Yote Klr]

Thanks, I will find a pound to try. I found a great load of 8133 in the 264, but nothing else. How would the reloader 33 work for a 300 Win Mag?

It might be an appropriate powder for 200gr and heavier in 300wm.
I would not use rl33 with lighter bullets. That will probably produce excessive muzzle blast and very dirty barrel.

 

[mmac]

I only run the 200 +, mine seem to like them better. I'll see if I can find some and try it.

 

[Muttly]

Anybody running 8133 in 7 Mag with 160s?