The 6UM

[dirtytough]

If you took it to a GS what would change if you could.

The stuff I would want changed isn’t something a GS can do.

 

[Outdoorsman12b]

2350 FPS


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Nice! Some guessing puts you about 1000 yards 1800 fps? How much more you looking to squeeze out?

I’m getting some 6mm envy.

 

[BjornF16]

@Ryan Avery How does it feed? Any WSM-like feeding issues?

 

[Ryan Avery]

@Ryan Avery How does it feed? Any WSM-like feeding issues?

This one is on a LA Tikka chassis from MDT, 3.560 so I don’t know how the shorter mag will feed.




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[INTJ]

Tikka is a “custom action”

Better trigger
Feeds like butter
Short bolt throw
Cheap

Let me give the rest of the story. I won a Tikka T3 in 300 Win Mag at a banquet a year and a half ago. I never win anything, and had zero need for the rifle. My hunting rifles are built mostly on CRF M-70 actions, and my target guns are on BAT actions. That's not likely to change much, and I already have several 30 cals that cover the range of a 300 Winny.

So I put the rifle in the safe at work as a shop rifle. Ryan came by and went all googled-eyed over it. Asked me if I was going to do anything with it. I said no.

He wanted to trade me out of it, but wouldn't cut loose of his pre-64 M-70. I told him he could just have it. He said he couldn't do that. I then said well, we will trade it for a hunting trip. He said he was going to take me hunting anyway. I told him to just take the rifle and we'd figure out something later.

When I finally did get to go out with him it became obvious that my Western Oregon approach wasn't going to work. All my stuff was for still hunting--where you are frequently moving--in the rain at temps of 30-50 degrees. In N. Idaho you need cold weather gear for all the sitting and glassing you do, which means a bigger backpack to carry the cold weather clothes.

So he traded me a Kifaru 22 Mag for the Tikka. That pack is much better for N. Idaho than the Kifaru Spike Camp I have had for 20+ years.

So we argued the whole time about the relative merits of Tikkas. When I chambered the barrel I didn't notice anything weird. This is the only Tikka I have worked on, but it seemed fairly true.

Well, he got the brass fire formed but the sizing die hasn't come in yet. So Iet him use the die for my 300 SAUM IMP. This is a custom die for my LRBR heavy gun, but all we had to do was change the bushing and it worked well.

I think this cartridge's true calling is medium game, but after all, they used to kill mammoths with sharp sticks so there is no reason a well placed shot on a larger animal won't work, as Ryan has showed us.

 

[Ryan Avery]

Let me give the rest of the story. I won a Tikka T3 in 300 Win Mag at a banquet a year and a half ago. I never win anything, and had zero need for the rifle. My hunting rifles are built mostly on CRF M-70 actions, and my target guns are on BAT actions. That's not likely to change much, and I already have several 30 cals that cover the range of a 300 Winny.

So I put the rifle in the safe at work as a shop rifle. Ryan came by and went all googled-eyed over it. Asked me if I was going to do anything with it. I said no.

He wanted to trade me out of it, but wouldn't cut loose of his pre-64 M-70. I told him he could just have it. He said he couldn't do that. I then said well, we will trade it for a hunting trip. He said he was going to take me hunting anyway. I told him to just take the rifle and we'd figure out something later.

When I finally did get to go out with him it became obvious that my Western Oregon approach wasn't going to work. All my stuff was for still hunting--where you are frequently moving--in the rain at temps of 30-50 degrees. In N. Idaho you need cold weather gear for all the sitting and glassing you do, which means a bigger backpack to carry the cold weather clothes.

So he traded me a Kifaru 22 Mag for the Tikka. That pack is much better for N. Idaho than the Kifaru Spike Camp I have had for 20+ years.

So we argued the whole time about the relative merits of Tikkas. When I chambered the barrel I didn't notice anything weird. This is the only Tikka I have worked on, but it seemed fairly true.

Well, he got the brass fire formed but the sizing die hasn't come in yet. So Iet him use the die for my 300 SAUM IMP. This is a custom die for my LRBR heavy gun, but all we had to do was change the bushing and it worked well.

I think this cartridge's true calling is medium game, but after all, they used to kill mammoths with sharp sticks so there is no reason a well placed shot on a larger animal won't work, as Ryan has showed us.

Paul Harvey’s

“The rest of the story”

 

[Ryan Avery]

Nice! Some guessing puts you about 1000 yards 1800 fps? How much more you looking to squeeze out?

I’m getting some 6mm envy.

I was in a rush to get the rifle together for last weeks hunt. Now I have some time to test some powders. I’m guess it will end up around 3350 FPS with the 115 Dtac.


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[BjornF16]

I was in a rush to get the rifle together for last weeks hunt. Now I have some time to test some powders. I’m guess it will end up around 3350 FPS with the 115 Dtac.


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Y'all still thinking 2300 fps minimum for those 115 DTAC?

 

[Ryan Avery]

Y'all still thinking 2300 fps minimum for those 115 DTAC?

Sounds like when they start tumbling the minimum velocity can be pretty low. There are also different nose ring cuts to add to the confusion.

My uncles cow was shot with a lower impact velocity The bullet tumbled and the internal damage was impressive.

Form can explain this in detail.

 

[Ryan Avery]

A small ten year old girl used the 6UM on a
Cow elk. The shot was 350 yards. The elk was broadside the shot was through the lower third of the lungs the exit was dramatic. The 6UMs biggest attribute might be the lack of recoil for a round with this much pop.

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[Clarktar]

I want one.

Group order at UM?

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[cmahoney]

A small ten year old girl used the 6UM on a
Cow elk. The shot was 350 yards. The elk was broadside the shot was through the lower third of the lungs the exit was dramatic. The 6UMs biggest attribute might be the lack of recoil for a round with this much pop.

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Was that a DTAC kill?


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[BjornF16]

Finally got some rounds loaded. Should have some speeds next weeks. I started with VV565 but I don’t think that will be “the powder”

The water capacity is 75g

6UM next to a 6CM

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What is your COAL with that 115 DTAC?

Was it 2.900”?

Also, how do you like the MDT HNT26 vs KRG Bravo?

 

[BjornF16]

I want one.

Group order at UM?

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UM should turn out some identical Tikka pre-fits…I’d buy one!

Tikka pre-fits will fit Sako 85 action, correct?

 

[Ryan Avery]

What is your COAL with that 115 DTAC?

Was it 2.900”?

Also, how do you like the MDT HNT26 vs KRG Bravo?

Yes 2.9

I don’t love the HNT26 or the Bravo. My favorite stock is probably the Clymer… or the EH1

 

[Ryan Avery]

 

[PNWGATOR]

You’ll learn to love the Bravo…just like you’ll learn to love the SWFAs.

Just sayin.

 

[Ucsdryder]

Yes 2.9

I don’t love the HNT26 or the Bravo. My favorite stock is probably the Clymer… or the EH1

Curious what you don’t like about the hnt?

 

[HOT ROD]

UM should turn out some identical Tikka pre-fits…I’d buy one!

Tikka pre-fits will fit Sako 85 action, correct?

Ill second this group bye on a tikka pre-fit

 

[eLightfoot]

I wish this was based off the PRC brass. Relying on ADG saum brass is like relying on the Bengals to win the superbowl. I do also realize there is the prc primal also though.