The 22UM

[Billogna]

Need to move up to slightly faster burning powder??

 

[The Fish Box]

Is the shoulder improved on this or just a straight neck down? Seems like the 220 redline performed with similar powders you’re trying now. Granted that was a very small sample piece for the .220.

 

[mxgsfmdpx]

@Formidilosus While it’s not a ton of “dedicated” testing, I have seen, with 5 barrels now and 5,000ish rounds between them, that all consistently shoot “worse” the faster the 80 ELDXs are leaving the barrel. Lighter charged 22CM test loads and 223s I haven’t seen accuracy issues.

So far the only barrel to shoot at or slightly better than 1 MOA above 3,200 FPS is a 20” McGowen 8 twist stainless barrel.

Lots more data still to observe obviously.

 

[Formidilosus]

Is the shoulder improved on this or just a straight neck down?

It’s an original 6UM 40° benched down. These were fire forming loads.

Seems like the 220 redline performed with similar powders you’re trying now. Granted that was a very small sample piece for the .220.

I don’t know what to say? I’m already getting slightly flattened primers.

 

[Formidilosus]

Need to move up to slightly faster burning powder??

That’s the plan to try.

 

[Formidilosus]

How’s case fill with those powders?

Pretty good.

 

[david2duck]

@Formidilosus While it’s not a ton of “dedicated” testing, I have seen, with 5 barrels now and 5,000ish rounds between them, that all consistently shoot “worse” the faster the 80 ELDXs are leaving the barrel. Lighter charged 22CM test loads and 223s I haven’t seen accuracy issues.

So far the only barrel to shoot at or slightly better than 1 MOA above 3,200 FPS is a 20” McGowen 8 twist stainless barrel.

Lots more data still to observe obviously.

Only one rifle but my dad’s 22cm saw similar results with the 80 ELDX/M’s and with the 77TMK. When we ran it up over 3200 groups opened significantly. We dropped the charge and settled on the TMK. Can’t remember his velocity off the top of the head.

 

[Billogna]

That’s the plan to try.

I've had good luckwith reloder 23 for overbore catridges.

 

[Formidilosus]

I've had good luckwith reloder 23 for overbore catridges.

Appreciate it. I will try it.

 

[GoatPackr]

@Formidilosus
You might look at the 22 Redline if you haven't yet. It looks like similar powder volume.

 

[The Fish Box]

Too much of a good thing????

 

[TX_Diver]

Saw a post from West Texas Ordnance about a 22 SAW. 3500fps 80 gr ELD in a 22” barrel…

Not sure if that’s comparable?

 

[Stocky]

Isnt that just a 22 creed improved?

 

[The Fish Box]

@TX_Diver can you share a link? My quick google search didn't bring anything up.

 

[Pokoki]

@TX_Diver can you share a link? My quick google search didn't bring anything up.

Pretty sure he's referencing the 22 LRV from WTO

 

[TX_Diver]

It was a post on Facebook.

I’m not sure if it’s a 22cm improved or not but velocity was up there.

They also have the 22 LRV but I don’t know anything about it.

 

[wind gypsy]

Isnt that just a 22 creed improved?

The SAW case is basically a '08 case but rather than 20 degree shoulders the neck/shoulder junction is pushed back to make 30 degree shoulders. So slightly smaller capacity than '08 and a little bigger than creedmoor. So a hair smaller than a 22-243.

 

[hereinaz]

Any new reports about using a Berger bullet at the higher velocities? I imagine bullet that design/consistency becomes more important at such extremes.

At higher velocities being a bit tougher is not a bad thing?

 

[Reburn]

It was a post on Facebook.

I’m not sure if it’s a 22cm improved or not but velocity was up there.

They also have the 22 LRV but I don’t know anything about it.

View attachment 892496

22 LRV is good for a 90 gr berger out of a 24" 7 twist at 3230 fps. The barrel was too long so I had it chopped to 20". I will report what speed is when I get it back.

 

[khuber84]

Isnt that just a 22 creed improved?

The 22 saw and 22cm are about 1.5-2gr difference of usable capacity below the neck.

22LRV is a 22/6XC, or 22XC essential, another good case design. Will be about 1 to 1.5gr less than the 22 creed, as they share the 1.920 case length but the XC parent has aboit another 0.040 longer neck.