New TMK announced

[FB Trout]

I asked the Sierra guy at the Hunt Expo that question specifically. He said an 8 twist will not get you the full capability of the BC of the 88s. He said they need a 7 twist.

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I had the same conversation with the Sierra guy at the expo, too. I’m going to try them in my 8 twist rechambered tikka 22-250 barrel and see how they do. I shoot the 88 ELDm and at my elevation/DA, it has been stable. With the lower BC of the 88 TMK, I think they will be okay.

 

[rafiki]

hmm i’ll be testing 88s in a 22CM (16.25” 7.5tw) at 2500-3500 DA. hopefully that’s fast enough. will share results.

 

[Q_Sertorius]

hmm i’ll be testing 88s in a 22CM (16.25” 7.5tw) at 2500-3500 DA. hopefully that’s fast enough. will share results.

I’ll be testing the 88-grain TMK’s in a Tikka 1:8 twist .22-250 at 2000-4000 DA. I ordered them based on some of the earlier test results. But I don’t expect to have them in hand for a while. And my rifle is still getting its wooden RokStok.

 

[ID_Matt]

I’m sure the guy said this, but my understanding of stability is that it’s a product of RPM which comes down to MV and the DA where you’re shooting.

Using the JBM stability calculator, a 1:7.5 twist seems to get to 1.5 pretty easily. 1:8, not so much.

Someone please correct me if I’m totally misunderstanding stability.

I’m second guessing my 18” 8 twist 22 creed now too…

 

[Jmedin]

The 88s are selling fast

 

[JBradley500]

I hope the 153s like 1 in 8 ok, especially for a short barrel. 500 are on the way.

 

[Formidilosus]

What is the continued worry talk with the 88’s and 1:8”? They shoot fine in 1:8” 22-250 and 22cm’s.