IMR 8133 for Overbore Cartridges

[Guy Miner]

We recently tested IMR 8133 and found it a very good fit for overbore cartridges. Link takes you to both the written article and the Ultimate Reloader video:

TESTED: IMR 8133 Smokeless Powder – Ultimate Reloader

ultimatereloader.com

Regards, Guy

 

[str8meat]

My 30-378 loves it great artcle.

 

[JD338]

I used IMR8133 in the 338 RUM with excellent results. In fact, it worked so well, I would have gone with it but I had close to 20 lbs of Retumbo. It's definitely a good powder.
Good read Guy.

JD338

 

[TackDriver284]

Good write up Guy. IMR 8133 is a powder I would like to try soon.

 

[DrMike]

Interesting. I have 8133 on my shelf, and I've never used it. That may have to change.

 

[RL338]

Thanks again for bringing some good info to us. This one I have never tried , looks good though for the mid range magnums.

 

[TackDriver284]

Hey guy, I was playing around with Quickload and see that the case fill is at 114% with 77 grains for the 7 Rem Mag and 150 ELD X. Did you get a powder crunch with a drop tube? I was checking it out for my 7 RM and 300 Win Mag possibly in the future.

 

[Guy Miner]

Hey guy, I was playing around with Quickload and see that the case fill is at 114% with 77 grains for the 7 Rem Mag and 150 ELD X. Did you get a powder crunch with a drop tube? I was checking it out for my 7 RM and 300 Win Mag possibly in the future.

Yup, it's a compressed load. Also shoots well a couple of grains lighter. Not as good from my rifle, but still quite good.

Regards, Guy

 

[TXbaldhunter]

That 8133 looks to be a really good powder.Your getting some very good velocities with it.Thanks for sharing the info.