That didn't last long
How much jump?
That looks ultra picky......I know a lot of guys ran the atips back around 65-80k off and found bigger seating depth nodes. What you're seeing there reminds me of Berger vld temperament.View attachment 7863345a little test I did a couple weeks ago.
Keep in mind this was done for seating depth only and the powder charge may not be in a node currently.That looks ultra picky......I know a lot of guys ran the atips back around 65-80k off and found bigger seating depth nodes. What you're seeing there reminds me of Berger vld temperament.
LedZep,It depends on how you calculate the BC. Over what range and by what metric. 100-200yd high velocity published BC's is nothing new.
If you go 0-1200 the BC that matches my real world/doppler results (MV 2750fps) for retained velocity is ~.265 G7. For drop at 1200 it's about .280. For 600yd velocity it's ~.280, and for 600yd drop it's .295. To match 200yd velocity it's about .285.
Which kinda serves to show the subtle issues with BC-based solvers. You're making the assumption that the drag profile of the bullet you're using matches up with the G7 standard projectile and most of the time it doesn't. If I were shooting a 6mm Creedmoor my BC numbers would be different from the above. Using a simple fixed scaling factor like BC is like using a single photograph/frame to represent a video. Sometimes it works well, sometimes it doesn't.
At any rate, if you use 4DoF, you can use the 109 profile as-is (I believe it's on the mobile app), or use a 110 with an axial form factor of 1.05 or 1.06 and it will line up with velocity and elevation all the way out.
I've been shooting the 109's for about a year now. "Almost a 110" is how I'd describe them. A little more drag; not quite interchangeable with 110's, but you don't see the differences until you're poking out there a ways (over 600-700yd). Certainly going to be a solid 'bang for the buck' performer.
View attachment 7863345a little test I did a couple weeks ago.
**update** I have since learned I was having issues with a carbon ring during this test so don't let my picture above scare you away from this bullet... it took me a while to figure that out and correct the problem. Solution, buy a bore scope and clean that transition area down to steel with a brush between the end of the cartridge neck cut out in the chamber and where lands ramp up into full rifling.
Because I use a relatively light powder charge I wasn't seeing the pressure signs some people do... I kept having fliers at distance that I knew where not caused by me,,, I ended up tracking it down to velocity spikes around 30fps, or so, every few rounds once I started monitoring every shot with my magnetospeed. I'll be retesting this bullet in a month or so once I get through the next couple matches with my Berger 109's
I had same issue and noticed the stability factor was barely at stable. I am running a 7.7 twist. Went to the 107 SMK, no issues. The ELD 109s are longer than the LRHT 109s so I think they need a faster twist. GA Precision says min is 7.5 but I would go 7 if was to run them.So I received a question from a podcast listener asking about the 109s. Apparently, one or more of his buddies are having great accuracy results at 100 but accuracy falls apart at 800+. Idk about the quality of their loading but has anyone else seen similar issues?
Did you ever get a chance to update this once you discovered your carbon ring issue?View attachment 7863345a little test I did a couple weeks ago.
**update** I have since learned I was having issues with a carbon ring during this test so don't let my picture above scare you away from this bullet... it took me a while to figure that out and correct the problem. Solution, buy a bore scope and clean that transition area down to steel with a brush between the end of the cartridge neck cut out in the chamber and where lands ramp up into full rifling.
Because I use a relatively light powder charge I wasn't seeing the pressure signs some people do... I kept having fliers at distance that I knew where not caused by me,,, I ended up tracking it down to velocity spikes around 30fps, or so, every few rounds once I started monitoring every shot with my magnetospeed. I'll be retesting this bullet in a month or so once I get through the next couple matches with my Berger's
So I received a question from a podcast listener asking about the 109s. Apparently, one or more of his buddies are having great accuracy results at 100 but accuracy falls apart at 800+. Idk about the quality of their loading but has anyone else seen similar issues?
I had same issue and noticed the stability factor was barely at stable. I am running a 7.7 twist. Went to the 107 SMK, no issues. The ELD 109s are longer than the LRHT 109s so I think they need a faster twist. GA Precision says min is 7.5 but I would go 7 if was to run them.
Is this the consensus now? Unstable at 600 plus yards?I’ve been shooting them for a while now and have mostly confirmed what I thought before. Up to 600 yards, they shoot pretty much the same as the A-TIPS. At around 600, the BC difference starts to show, and the A-Tips pull ahead. So I’ve been using the ATips for long range matches (out to 1000yds), and the 109s for our local steel matches where the max range is 550 yds. I haven’t had any problems with them. If you want a cheap alternative to ATIps, they are ok. If I was using the Berger 109s, I doubt I would see much reason to switch to the Hornadys unless I got a great deal on them.
I took a large mule deer and a cow elk, a friend took two antelope, all from my Dasher. ~100 yds to 532 yds. Has worked well, nothing has gotten away, would use again.Is anyone shooting coyotes or deer with these? How has the expansion been?
Is this the consensus now? Unstable at 600 plus yards?
I have a 7.5 barrel, and I am trying to select a bullet to start loading. I was also thinking about starting out with commercially loaded cartridges and then reusing the brass. It looks like the ELD Match 109 are the only commercially loaded cartridges available in 6mm GT.
Did you ever get a chance to update this once you discovered your carbon ring issue?
I checked with GA precision a month or so ago. They said they would be back sometime in 2024. I asked if it was the beginning or the end of 2024. Sometime in 2024 was the response.Anyone have an idea of when these will be available again or have some they'd like to sell?
I’ve shot about 600 loaded in 6GT out of a 1:7.5, have cleaned IPSC targets out to 1200. Factory stuff is hottish/fast, about the same as my loads at 2900 out of a 26”.Anybody shoot the 109 ELDM 6GT boxed ammo in a 1:7 barrel? I have my eye on an osprey prefit and they talk about all 6mm barrels coming in 1:7 twist. Thanks!
Which action and what size firing pin do you have?Anybody shoot the 109 ELDM 6GT boxed ammo in a 1:7 barrel? I have my eye on an osprey prefit and they talk about all 6mm barrels coming in 1:7 twist. Thanks!