The 6UM

[B23]

Just an FYI we have +Ped three 6UMs the results have not been good. The standard throat seems to be the optimal design.

Sometimes to much of a good thing is just to much of a good thing.

 

[Ryan Avery]

How was that determined, just out of curiosity?

How the baffle broke off the weld.

 

[Ryan Avery]

Got the new 6UM up and running.

650 yard head shot

 

[IrkedCitizen]

Got the new 6UM up and running.

650 yard head shot

New ace barrel?

 

[sportsmans challenge]

@Ryan Avery are you just sticking with the non +p version now?

 

[Spoonbill]

Could you tell if the bullet actually tumbled ?


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Forgot to take autopsy pictures but my buddy used a 57 gr out of his 243 on an antelope. Quartering away at 320ish yards the bullet punched through the liver and exited. Second bullet hit around 400 near the first entry hole and I heard it ricochet. Heavier bullets going slower may tumble or if used on a bigger animal.

 

[Gstew1930]

Tagging jn

 

[The Guide]

Tagging jn

No need to post to watch something. At the top of the thread you can click on the "watch" button and it will add it to your watched threads and allow you to get notifications on when new content is posted in this thread.

Jay

 

[Gstew1930]

No need to post to watch something. At the top of the thread you can click on the "watch" button and it will add it to your watched threads and allow you to get notifications on when new content is posted in this thread.

Jay

Good deal, I didn’t know that. Thanks Jay

 

[The Guide]

Good deal, I didn’t know that. Thanks Jay

No problem. Just sharing knowledge to allow for better functionality of the forum.

Jay

 

[Lawnboi]

The new silencerco titanium can has no barrel length restrictions…..

The pressure at the muzzle on my 16.5” 22 creedmoor is enough, can’t imagine that much powder in that small of hole.

 

[Brontosaurus]

5in +p 22UM Suppressed is where I immediately went with this

 

[PathFinder]

While working on butchering last night I realized there was one more large fragment on my antelope. The two on the left are the ones I shared before. On the right is the larger one I missed the first time. This seems to be in line with what Ryan saw on elk last season. The large distance between fragments is intriguing. I don't recall observing anything similar from ELD-Ms over the last 6-7 years.
My best guess is that this bullet tumbled pretty hard as it fragmented. It seems to have taken a pretty hard turn to the right as well. Pretty devastating at these velocities!

 

[wind gypsy]

5in +p 22UM Suppressed is where I immediately went with this

What twist rate is required to stabilize a DTAC when you've only got 1" of rifling?

 

[The Guide]

What twist rate is required to stabilize a DTAC when you've only got 1" of rifling?

1 in 1"

Jay

 

[Brontosaurus]

1 in 1"

Jay

probably have to switch to a 50 grn bullet so it doesn't stick out the muzzle

 

[rifletuner]

I dont know if I missed it in the thread, but is there a match bullet or lead cored bullet other than the nose ringed DTACs that will handle 6UM velocities?

 

[Mountainrancher]

I dont know if I missed it in the thread, but is there a match bullet or lead cored bullet other than the nose ringed DTACs that will handle 6UM velocities?

Doesn’t seem like it. The 103 eldx and maybe the 100 tgk are being tested but seems like the dtac is it

 

[PathFinder]

I dont know if I missed it in the thread, but is there a match bullet or lead cored bullet other than the nose ringed DTACs that will handle 6UM velocities?

Do you mean handle as in the bullet doesn't hold together at all, or handle as in terminal performance at those velocities?
The former depends on barrel twist. An 8 twist should open up lots of options. For the latter, maybe Form or someone has some experience but I haven't seen much data on anything but the NR DTAC yet.

 

[SouthPaw]

I dont know if I missed it in the thread, but is there a match bullet or lead cored bullet other than the nose ringed DTACs that will handle 6UM velocities?

Sure. If the barrel is an 8 twist you shouldn't have issues with the popular 100g+ bullets.