Sierra Gamechanger bullets.

[cohunt]

Choose 'reply', then choose 'upload a file', then go to 'documents' ,then choose images and select the pic, then choose 'post reply'.

 

[cohunt]

Choose 'reply', then choose 'upload a file', then go to 'documents' ,then choose images and select the pic, then choose 'post reply'.

 

[cohunt]

There you go, how's that? I'm not real great at sectioning a bullet but it should be better than nothing

Thanks for the tip on how to post pics , easy

 

[adam32]

Good looking bullet to me!

 

[biggen]

Good looking bullet to me![/QUOTE

I agree, looks like it would stay together.

 

[tbrice23]

I just got a box of the 7mm gc bullets
Right on the box it says tipped game king

Cut one open and compared it to a 162 eld-x...the jacket on the siera is thicker and the tip is both externally and internally larger and longer than the hornady bullet.

Cut them both apart and The boat tail on the siera is slightly longer, the bearing surface is about the same--- the eldx has a longer tapered ogive (hybrid ?)and the siera' s ogive seems more rounded (kinda tangent?) ,the eldx seems more secant than the GC strange thing is my eldx had no "interlock ring" in the jacket

The jacket does look thicker on the Sierra. You are right, I don't see the internal "interlock"
rolleyes ring on the Eldx.

When they first came out I recovered some Eldx that definitely had the inter ring, it looked very small and did nothing because every one I recovered lost all the lead (complete separation).

 

[tbrice23]

There you go, how's that? I'm not real great at suctioning a bullet but it should be better that

Rub the flat side on some fine sandpaper until smooth, the details will show better. Might be able to make out the tiny interlock groove on the Eldx.

 

[cohunt]

After i took the pics i tried to pop out the lead core to see if i could see the interlock ring and then try to mic the jacket thickness, but neither core wanted to just "pop out" easily....maybe I'll try harder today

 

[cohunt]

Ok--- ready for my super scientific approach to things here!!!!??? HA!

I tried to pry out both lead cores, neither wanted to budge and I ended up distorting the jacket trying, but the eldx did feel slightly softer than the gc

So then I decided to melt out the lead core with a propane torch...wow, the lead cores are definitely different. The eldx melted out pretty cleanly and took less time to melt than the gc ( softer alloy), the lead in the GC wanted to stick to the jacket and not melt out all the way so there is definately an alloy difference either in the lead core or copper jacket.
Now here is a kicker--- hornady is telling no bull about their heat resistant tips, the tip did NOT melt while melting the lead, nore did it seem to want to melt. On the other hand the siera tip flamed up fairly quickly (before the lead was molten) and fireballed to an early death, so I'm guessing their tips are not heat resistant

As far as the jackets go, I tried to measure them in several places for comparason--- the siera does indeed have a thicker jacket. The eldx most of the straight bearing lenght seems to be the same thickness, but the nose appears to taper.

Here is my pic of what's left if the jackets and tips after my morning science experiment--- I think I'll get some coffee now

 

[257Tony]

You can see the interlock ring on the eld about halfway down, looks like small barbs. Thanks for the pics!

 

[cohunt]

You can see the interlock ring on the eld about halfway down, looks like small barbs. Thanks for the pics!

Yup, its marked on my drawing...its very slight, I figured it would be larger...its also further up than I imagined....its just past the 1/2 way point of the jacket--- it would be a 60/40 distribution there Is 60% of total amount of jacket infront of the ring and 40% behind

 

[can1010]

thanks for the info & pics looks like the sierras will be a good short to medium range bullet. with the Hornady lead core melting easier might help with understanding why some are having bullets blow up.

 

[Creedmoor shooter]

Ok--- ready for my super scientific approach to things here!!!!??? HA!

I tried to pry out both lead cores, neither wanted to budge and I ended up distorting the jacket trying, but the eldx did feel slightly softer than the gc

So then I decided to melt out the lead core with a propane torch...wow, the lead cores are definitely different. The eldx melted out pretty cleanly and took less time to melt than the gc ( softer alloy), the lead in the GC wanted to stick to the jacket and not melt out all the way so there is definately an alloy difference either in the lead core or copper jacket.
Now here is a kicker--- hornady is telling no bull about their heat resistant tips, the tip did NOT melt while melting the lead, nore did it seem to want to melt. On the other hand the siera tip flamed up fairly quickly (before the lead was molten) and fireballed to an early death, so I'm guessing their tips are not heat resistant

As far as the jackets go, I tried to measure them in several places for comparason--- the siera does indeed have a thicker jacket. The eldx most of the straight bearing lenght seems to be the same thickness, but the nose appears to taper.

Here is my pic of what's left if the jackets and tips after my morning science experiment--- I think I'll get some coffee now

I'm not sure why people thought the melting tips was bull crap. It makes sense to me. That's alot of friction on that plastic tip going through the air I dont see why it wouldnt melt. Good to see hornady did indeed put a heat resistant tip though. First time I've seen anyone actually try that.

 

[cohunt]

I'm not sure why people thought the melting tips was bull crap. It makes sense to me. That's alot of friction on that plastic tip going through the air I dont see why it wouldnt melt. Good to see hornady did indeed put a heat resistant tip though. First time I've seen anyone actually try that.

It was actually a secondary test...i melted the lead from the hornady first...i tried to keep the flame off of the tip and it didn't really seem to melt at all, then when I went to melt the lead from the siera, I used the same procedure but no matter what I did, the tip not only wanted to melt bit then it flamed up pretty quick and burned with a heavy black smoke

I agree that the gamechanger will be better at close to midrange, but I'm thinking the eldx may perform better at further distances....time will tell as it will take real world animal kills to sort it all out.
The siera does have a larger tip both inside and outside the jacket though so that could help with initial expansion and possibly longer range expansion as there is often times more than 1 way to skin a cat