.300Win mag 225 eld imr 8133

[Calvin45]

Hey all, just thought I'd share my findings with the first powder I've tested in my savage 111 long range hunter 300 win using the 225 eld. Using imr 8133 powder, seated to coal of 3.58". Not touching the lands yet.

Having some issues with the tips being deformed in the standard die (which hornady notes will happen) if seated any shorter than this.

Bullets are coated in hbn.

Federal 215m primers, Winchester brass.

Very heavily compressed, went all the way up to 80.0 grains of powder (and no I don't have a drop tube) with no pressure signs. I might try a faster burn rate powder, next two are 7977 and h1000.

I found a node of sorts. Going from 78.5 to 80.0 grains only increased velocity by 30 FPS. So I settled on 79.0. Didn't get time to do any serious accuracy testing or chrono a ton of rounds for meaningful sd numbers. Chrono reading average of 3 shots is 2760 fps (right around 3800 foot pounds or so). With the brake, the weight of the setup, and the big squishy recoil pad it still kicks way less than my .270.

 

[Sevy]

Please is posted on the results you get. I got a pound of 8133 waiting to be tried in the 300 with a 225. I am currently using rl26 at 2800fps out a 23.5" barrel. Does that coal length fit in your mag?

 

[Calvin45]

To be honest I don't know. Didn't try. Was just single feeding them. It doesn't matter to me either way but I'll check next time.

 

[Calvin45]

Checked today. If they were a smidge shorter they'd fit, but they are indeed too long for the magazine. No worries for me though.

Was very pleased with some more accuracy testing today, which was needed after i discovered MY SCOPE BASE WAS WIGGLY!!! Had to tighten the screws real hard. If it happens again will use an adhesive of some kind.

Verified drop out to 400 yards today, it's hitting where it's supposed to now.

But what really made me squeal a bit was what the three shot group it printed at around 80 paces or so.

225 eld m hbn treated. 300 win mag. Winchester brass. 3.56 coal. 79.0 grains imr 8133 compressed. Federal 215M. Around 2760 average FPS. Savage 111 long range hunter. Vortex crossfire2 6-18x.