Sierra Heavy TMK 6MM Testing

[Gstew1930]

Really looking to trying the 88 in 223 ackley

 

[Schmo]

Really looking to trying the 88 in 223 ackley

And in my added freebore 223 in NAS3 cases

 

[Gstew1930]

And in my added freebore 223 in NAS3 cases

 

[alexnelon]

That 153 looks like it could be made by Easton or Gold Tip

 

[jjohnsonElknewbie]

The 153 may find a home in my 6.5 WSM at around 3100 fps if its better than the 147 ELDM. LOL!

 

[Lawnboi]

Really looking to trying the 88 in 223 ackley

Just imagine another 100fps faster at 22” would have been!

 

[Brandon_SPC]

Question, now that Berger has a 115 grain VLD, 115 grain target bullet, Sierra is coming out with the 116 grain TMK, do yall think Hornady will come out with an ELDM to compete?

 

[Schmo]

Question, now that Berger has a 115 grain VLD, 115 grain target bullet, Sierra is coming out with the 116 grain TMK, do yall think Hornady will come out with an ELDM to compete?

Even if they did I’m still using the TMK. I realize that’s not what you asked lol

 

[Brandon_SPC]

Even if they did I’m still using the TMK. I realize that’s not what you asked lol

Hahaha oh ill be using a TMK first but you know Sierra has these weird Autistic moments where they forget to make 6mm TMK for a few years. So I need me a stand by when either they arn't making them or yall goons buy them all.

 

[BJames]

Hahaha oh ill be using a TMK first but you know Sierra has these weird Autistic moments where they forget to make 6mm TMK for a few years. So I need me a stand by when either they arn't making them or yall goons buy them all.

Buy a barrels worth. Knowing hornady, the first heavy eldm’s will probably blow up if you push them too hard. Happened with the 6.5 147’s and 7 180’s.

 

[streamerfish]

So what you are saying is a new modernized version of a partition but with high BC and a tip might be something on the table in the future?

Brooo.....dont say things like that....its the hope that kills....

 

[HOT ROD]

Cant wait to try the 153 tmk in the 6.5 prc.....

 

[B_Reynolds_AK]

And in my added freebore 223 in NAS3 cases

Right there with ya.

 

[nuffgun]

Hahaha oh ill be using a TMK first but you know Sierra has these weird Autistic moments where they forget to make 6mm TMK for a few years. So I need me a stand by when either they arn't making them or yall goons buy them all.

lol, spot on!!!

 

[Schmo]

Hahaha oh ill be using a TMK first but you know Sierra has these weird Autistic moments where they forget to make 6mm TMK for a few years. So I need me a stand by when either they arn't making them or yall goons buy them all.

I hear ya. But if Sierra follows through on the conversation they had, availability shouldn’t be much of an issue

 

[Tell]

Right there with ya.

Do you have any experience with these cases? Are they decent for reloading, and can they handle extra pressure? I’ve read what they claim, but I don’t know anyone with personal experience. I’m skeptical, but then there’s the 277 fury and as far as I can tell, that has to be legit. Is this just trying to ride on the coat tails of that or is it the real deal?

 

[B_Reynolds_AK]

Do you have any experience with these cases? Are they decent for reloading, and can they handle extra pressure? I’ve read what they claim, but I don’t know anyone with personal experience. I’m skeptical, but then there’s the 277 fury and as far as I can tell, that has to be legit. Is this just trying to ride on the coat tails of that or is it the real deal?

Can’t speak to any of the loaded ammo, but the cases can take higher pressure & they said that due to the construction, they have additional powder capacity. That would mean an additional 2 grains of powder in 223/556. They can’t be reloaded. I havnt received the 250 cases I ordered yet, but will update when I do. I’m already getting 2800 fps from my 16” bbl (1/7, .100 fb) with 80’s and N150 in ADI brass.

 

[Gstew1930]

Can’t speak to any of the loaded ammo, but the cases can take higher pressure & they said that due to the construction, they have additional powder capacity. That would mean an additional 2 grains of powder in 223/556. They can’t be reloaded. I havnt received the 250 cases I ordered yet, but will update when I do. I’m already getting 2800 fps from my 16” bbl (1/7, .100 fb) with 80’s and N150 in ADI brass.

damn, that's impressive

 

[KyleR1985]

damn, that's impressive

2850 fire forming in my 223ai with 77’s over 26.5gr lever @ 2.35”. 16.5” barrel.

Have it throated to touch 77’s at 2.5” now. LC h20 case capacity over 32gr after forming. My expectation is to easily get 27gr, maybe more, lever in there loaded at 2.45”.

 

[Gstew1930]

2850 fire forming in my 223ai with 77’s over 26.5gr lever @ 2.35”. 16.5” barrel.

Have it throated to touch 77’s at 2.5” now. LC h20 case capacity over 32gr after forming. My expectation is to easily get 27gr, maybe more, lever in there loaded at 2.45”.

whats your twist rate?