Sierra Heavy TMK 6MM Testing

[TradLife406]

10 deer today. All bullets exited. They are performing as expected.

Pics of the wounds?

They seem to perform better than the dtacs on deer? I only had a sample size of two with the dtacs on deer. They definitely worked leaving nothing wanting. From 25 yards and 450 with the 6UM.

Just curious to see how your larger sample size compares.

 

[Formidilosus]

Pics of the wounds?

Yes. But will take a few days to collate.

They seem to perform better than the dtacs on deer? I only had a sample size of two with the dtacs on deer. They definitely worked leaving nothing wanting. From 25 yards and 450 with the 6UM.

Just curious to see how your larger sample size compares.

Yes. The NR DTAC’s do well at impact velocities on deer, they have long neck lengths at medium and low impacts.

 

[Formidilosus]

Two of them:

 

[Gstew1930]

Two of them:

View attachment 1013529


View attachment 1013530

Well that sucks. Wounds look super narrow

 

[mlevimadden]

Well that sucks. Wounds look super narrow

He probably had to shoot it twice after the scapula stopped the first shot from a piss ant 6mm.

 

[Mike D Texas]

There's some tradeoff. Single vs double base powders, 540 will gain some speed, but probably be a little less temp stable.

N150 is extremely consistent, if a touch slow. Very very popular with competition shooters in some of the 6's.

Actually the N5 series powders are more temp stable than the 1 series.


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[Bluumoon]

Two of them:

View attachment 1013529


View attachment 1013530

Don’t shoot what you want to eat, and maybe don’t shoot them 3-5 times, got it.

 

[jonnyviceroy]

Actually the N5 series powders are more temp stable than the 1 series.


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How are their double base powders more temp stable? The 1 series is single base. I don’t have any stability issues with the 5 series I really enjoy them but have always known it to be the exact opposite of what you wrote.

 

[The Guide]

How are their double base powders more temp stable? The 1 series is single base. I don’t have any stability issues with the 5 series I really enjoy them but have always known it to be the exact opposite of what you wrote.

This came from the words of the mouths from the manufacturer.

Jay

 

[alexnelon]

This came from the words of the mouths from the manufacturer.

Jay

View attachment 1013696

My mind is blown. I don’t even understand how that’s possible.

 

[wind gypsy]

I was pretty sure it was powder dependent on stability. IE n555, n565, n150 are quite stable. N540, n560, n165 less so. Also read that some of the n1xx series formulations had been changed with additives to make them more stable in recent years.

 

[cq0302]

I was pretty sure it was powder dependent on stability. IE n555, n565, n150 are quite stable. N540, n560, n165 less so. Also read that some of the n1xx series formulations had been changed with additives to make them more stable in recent years.

Even n560 isn’t terrible. That last temp test I did from 34f to 120f I saw less than 10f difference on a 5 shot avg. I thought I had 560 issues last year, but I had scale problems lol


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[TradLife406]

Newer to using Viht powders but it seems my current barrels seem to prefer their offerings over Hodg. Even for standard go to's like varget or 4350 h1000.

I think in part it's because I have a huge collection of Hodg so my tism has me try them all. With Viht there's only a couple maybe three choices.

 

[jonnyviceroy]

This came from the words of the mouths from the manufacturer.

Jay

View attachment 1013696

Interesting, thank you for sending this over. Never would’ve guessed.

 

[mlevimadden]

Newer to using Viht powders but it seems my current barrels seem to prefer their offerings over Hodg. Even for standard go to's like varget or 4350 h1000.

I think in part it's because I have a huge collection of Hodg so my tism has me try them all. With Viht there's only a couple maybe three choices.

What’s your favorite Viht substitute for H4350? N555?

 

[mtnbound]

What’s your favorite Viht substitute for H4350? N555?

Yes, I like N555, but I tend to use about 1-1.5 g more of N555 than H4350 for the same fps.

 

[The Guide]

Newer to using Viht powders but it seems my current barrels seem to prefer their offerings over Hodg. Even for standard go to's like varget or 4350 h1000.

I think in part it's because I have a huge collection of Hodg so my tism has me try them all. With Viht there's only a couple maybe three choices.

I'm confused at your statement that there is only a couple of choices of Vihta Vouri powders. There are the V1xx series and the V5xx series powders for rifles and generally there are 2 or 3 powders in each series that work for a cartridge depending on the cartridge and bullet weight. I've see lower lot to lot velocity changes from cartridges loaded with the V5xx series powders than I have with Hodgdon or Reloader powders in general when discussing "high energy" powders and loads.

Jay