6.5-284 & IMR 4831

[Longrangers]

I'm sure this has been touched on, but I can't seem to find any info addressing this question. I have a 6.5-284, 24" 1-8 twist, running Berger 140 vld with 52g of Hodgdon 4831, getting around 3k fps. Unfortunately I'm having a very very hard time getting any more H4831. Like everyone else I'm sure.
My question is, am I able to get the same fps with imr 4831? If so, at what grain? I know imr burns differently, so I was checking what others have done. I'm sure I'm not the first, but if I have to start over with a whole new recipe, I guess I will.

Any input would be greatly appreciated

If you can find retumbo it works well.

 

[fmuguira]

In 06 sized cases, which 6.5-284 is similar to, I ve found over the years that 2-3 grains less of IMR4831 gives similar pressure/velocity to H4831. That said I d reduce your load more than 3 grains and work back up.

 

[TRexF16]

This is from the Nosler loading hand bookView attachment 291550

Am I the only one for whom the data for H4831 compared to IMR4831 on the page above do not seem to make sense? Max pressure reached with H at one grain less than IMR, and over 200 FPS more with IMR than H at whatever pressure they chose to limit themselves to?

In 06 sized cases, which 6.5-284 is similar to, I've found over the years that 2-3 grains less of IMR4831 gives similar pressure/velocity to H4831. That said I d reduce your load more than 3 grains and work back up.

This matches my experience too, but is completely counter to the data above.
Thoughts anyone?

Rex

 

[fmuguira]

Rex, I noticed that also and is in conflict of my experiences. That's why I try to look at multiple reloading data and start low and work up with chronograph and measure new brass case head expansion when starting load development on a new rifle!

 

[Dave229]

I use RL-26 in my Shaw 6.5-284 Norma with 140 gr Bergers. I average 3036 fps in a 26" barrel. It shoots absolute lasers.

 

[memtb]

I'm sure this has been touched on, but I can't seem to find any info addressing this question. I have a 6.5-284, 24" 1-8 twist, running Berger 140 vld with 52g of Hodgdon 4831, getting around 3k fps. Unfortunately I'm having a very very hard time getting any more H4831. Like everyone else I'm sure.
My question is, am I able to get the same fps with imr 4831? If so, at what grain? I know imr burns differently, so I was checking what others have done. I'm sure I'm not the first, but if I have to start over with a whole new recipe, I guess I will.

Any input would be greatly appreciated

I can't help you with info....but, can welcome you to the forum. So.....welcome from North-Central Wyoming! memtb

 

[memtb]

I use RL-26 in my Shaw 6.5-284 Norma with 140 gr Bergers. I average 3036 fps in a 26" barrel. It shoots absolute lasers.

Dave, I recently got 8 pounds of RL 26 to try in my 6.5-284 with 139 Scenars. Data seems to be scarce with the RL 26.....any suggestions? memtb

 

[Dave229]

Dave, I recently got 8 pounds of RL 26 to try in my 6.5-284 with 139 Scenars. Data seems to be scarce with the RL 26.....any suggestions? memtb

Bob,
I use 55.3gr of RL-26 with my 140 gr Bergers. Of course every rifle is different but this combo really works well for me. Since this forum put me on to RL-26, I use it in my 25-06, 6.5/284, 30-06, 7mm Mag and 300 Win Mag. The stuff is incredible. You are lucky to find any. I haven't seen any
at my LGS in a year.
Good luck,
Dave

 

[Wayne Huff]

I'm sure this has been touched on, but I can't seem to find any info addressing this question. I have a 6.5-284, 24" 1-8 twist, running Berger 140 vld with 52g of Hodgdon 4831, getting around 3k fps. Unfortunately I'm having a very very hard time getting any more H4831. Like everyone else I'm sure.
My question is, am I able to get the same fps with imr 4831? If so, at what grain? I know imr burns differently, so I was checking what others have done. I'm sure I'm not the first, but if I have to start over with a whole new recipe, I guess I will.

Any input would be greatly appreciated

 

[Wayne Huff]

I'm sure this has been touched on, but I can't seem to find any info addressing this question. I have a 6.5-284, 24" 1-8 twist, running Berger 140 vld with 52g of Hodgdon 4831, getting around 3k fps. Unfortunately I'm having a very very hard time getting any more H4831. Like everyone else I'm sure.
My question is, am I able to get the same fps with imr 4831? If so, at what grain? I know imr burns differently, so I was checking what others have done. I'm sure I'm not the first, but if I have to start over with a whole new recipe, I guess I will.

Any input would be greatly appreciated

Ever looked at IMR 4955 or IMR7977 both are close to what you are using now and these are also temperature insensitive better than imr4831.

 

[Wayne Huff]

Or even Reloader 23 it is also good for 6.5/284 and temperature insensitive.

 

[Mayhem 487]

I have searched for RL23, but not having any luck

 

[dougduey]

I have searched for RL23, but not having any luck

Shoot me a PM and I'll get you my load data with RL23 and the 140gr Berger VLD later this evening

 

[Coyote Shadow Tracker]

Whenever we get our 6.5X284 build done will be shooting 142SMKs in 30" -1:8twist for "F" class. I have plenty of H4831SC. Has anyone had luck with using H4350 or H1000????