New TMK announced

[huntnful]

So the reason I asked is that I have seen Hornady bullets kind of vary a bit. It's the sort of thing you measure when you're bored then wish you hadn't.

I just measured some - the remainder of a box of 130ELDMs and the remainder of a box of 147s.

Numbers (SDs calculated as from a sample, not a population):

View attachment 1028910

So, the bad part of that isn't the numbers themselves (though those 130s seem all over the map to me).

The bad part is - the 130s are supposed to be 1.28" to 1.29" long. And the 147s are supposed to be 1.43" to 1.44" long. Not 1.314 and not 1.460. The sample I just measured of a few of both boxes all measure .264x" in diameter so I don't think my calipers are off. I think Hornady just makes bullets that vary in length.

Again, whether that's some terrible thing, depends on how they shoot.

I have 4 lot #'s of 180 ELDM's and they are basically 4 different bullets lol.

I caught it because I set my seating die up to an old loaded round, then seated a new bullet and checked COAL and it was .040 difference. Then I started comparing all the lots and holy shit. And some lots absolutely shoot worse than others. So you can try 100 and have them hammer and think "hell yeah, I'll order 500". And they shoot much worse. Super frustrating. So I switched fully back to berger's, but am definitely looking forwards to trying TMK's now.

 

[Chris in TN]

I have 4 lot #'s of 180 ELDM's and they are basically 4 different bullets lol.

I caught it because I set my seating die up to an old loaded round, then seated a new bullet and checked COAL and it was .040 difference. Then I started comparing all the lots and holy shit. And some lots absolutely shoot worse than others. So you can try 100 and have them hammer and think "hell yeah, I'll order 500". And they shoot much worse. Super frustrating. So I switched fully back to berger's, but am definitely looking forwards to trying TMK's now.

I've never had the 180s not shoot well but I've certainly had them vary in length.

So, I snagged a 100 ct box of the new 107TMK so when those 6mmCM Tikkas hit the market I won't be caught with Sierra out of stock everywhere.

Just measured thirty of them.

Data:


The ES is actually larger than what I just measured with those 147eldms, but the SD is a bit smaller. I look forward to trying them.

Also - looking at the above data the THIRTIETH bullet - last one I measured - bumped my ES out another 0.001". I'll call that an object lesson in sample sizes. lol.

 

[Lawnboi]

Left 107 tmk
Right 105 hybrid

It’s a pretty aggressive bullet. Perfect in a .120 freebore dasher chamber

 

[Lawnboi]

Next to a 108 eldm

 

[huntnful]

Left 107 tmk
Right 105 hybrid

It’s a pretty aggressive bullet. Perfect in a .120 freebore dasher chamber


View attachment 1028918View attachment 1028946

Badass. Mine show up tomorrow supposedly. I’ll plan to shoot them Sunday. The .183 freebore on 6 CM won’t be ideal for them, but they should still shoot. It’s not ideal for 109 LRHT’s and they still shot a 20 shot .8 group. So I have a good accuracy baseline.