Sierra Heavy TMK 6MM Testing

[Woodsman44]

I’ll be loading a new 6UM-40 for the first time with these 116’s as well and am probably going to start at 64gr and work up to find pressure.


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[Dude270]

I shot some 107s out of my 6br sporter yesterday. .030 off the lands with 29.5 grains of varget gave me just over .5 moa 5 shot groups.
I believe more load dev would give even better accuracy, but the bullets seem pretty easy to get to shoot.

I'll give my 6 creedmoor a try with them next. Hopefully the 116s will fly OK in it's 8 twist barrel, if not, I'll fall back to the 107s.

 

[IrkedCitizen]

I’ll be loading a new 6UM-40 for the first time with these 116’s as well and am probably going to start at 64gr and work up to find pressure.


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Might want to start lower than that if you are fireforming fresh brass to 6UM40. 64gr N570 is go-to load for the 6UM30

 

[Woodsman44]

Yeah good point. I’ve fire-formed the brass to 40 already so this will be final load development for me.


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[TradLife406]

Might want to start lower than that if you are fireforming fresh brass to 6UM40. 64gr N570 is go-to load for the 6UM30

All fire formed brass.

 

[Chanimal]

These arrived today…

 

[rafiki]

These arrived today…

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that’s a whole lotta wampum

 

[JDMBEND]

These arrived today…

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And hopefully they keep them in stock. Think they are going to sell boat loads of 116’s.

 

[brockel]

These arrived today…

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Did you order them straight from Sierra? I haven’t got a shipping notification for my order is why I ask.