98Z5V Posted October 13, 2018 Author Report Share Posted October 13, 2018 6 hours ago, suzukiray said: How did these shoot Tom? Fucking rained out last weekend. Rained like crazy before the weekend, and the wash was flooded - got to the end of the res, and couldn't get out there. Rained hard as hell again today,soI don't know if that wash will be flooded tomorrow. I'll try, tomorrow... Driving me nuts, brother... Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 14, 2018 Author Report Share Posted October 14, 2018 Well, the normally-dry wash was a river again this morning. No crossing that. Next chance to shoot is 6am Wednesday morning, get it done, get back, pick up Matt at the airport, then load ammo. Damnit. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 28, 2018 Author Report Share Posted October 28, 2018 .260 Rem load workups with Hornady 140gr ELD-M and 147gr ELD-M projectiles. Distance to target from the gun was 105.4 yards. Here's the 140gr targets out there - They didn't do well, and I'll talk about those later... 147gr ELD-M targets. Camera focused on the gun, I should have zoomed... This gun LIKES the 147gr ELD-Ms and RL-22 powder!!! Load data follows: All projos are Hornady 147gr ELD-M, powder is Alliant RL-22, COL for all loads was 2.785". Once fired Hornady Match .308 brass, resized to .260 Remington with RCBS dies. CCI 200 Large Rifle Primers. #1, 42.3 gr (4 rds) 0.955" #2, 42.6 gr (3 rds) 0.862" = 2550 fps #3, 42.9 gr (3 rds) 1.699" - I think I screwed this group up. 2 of them bug-holed, and I flew one - worth looking at later... #4, 43.2 gr (3 rds) 0.927" #5, 43.5 gr (3 rds) 1.025" - 2600 fps #6, 43.8 gr (3 rds) 1.931" #7, 44.1 gr (3 rds) 1.264" #8, 44.4 gr (3 rds) 1.508" - 2650 fps Groups 1~4 cycled the gun fine, and had last-round lock back. Groups 5~8 cycled the gun fine, but the BCG did not lock back in the last round - it's going too fast. The brass doesn't show it, at all, but 5~8 are too hot to catch that BCG, and the cyclic speed is up there. So, #2~#4 are doing it well - worth loading up more in the 42.6gr~43.2gr range, in smaller steps. I'll load them in 0.2gr steps, 10 each, and really test it out. That'll be the next 40 rounds through the gun. That VG6 6.5 Brake... Damn, man, between that thing, and the recoil system (5.7oz modified Slash RRA heavy buffer, Sprinco Orange spring, AR15 mil-spec carbine receiver extension)... The scope doesn't even come off target. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 28, 2018 Author Report Share Posted October 28, 2018 (edited) Where the accuracy comes in is at 2550 fps and a little north of that. My load #2 above should be 2550, and I'll work up through load #4. Load #5 would be at 2600 fps. I'll be between 2550~2600fps when it's all settled. Here's a drop chart based on 2550 fps with that projectile. G1 BC of 0.697, G7 BC of 0.351. This projectile is the sheit for this caliber! Supersonic to 1400 yards... Edited October 28, 2018 by 98Z5V Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 28, 2018 Author Report Share Posted October 28, 2018 Based on those impacts on target, with a direct center-hold, I'm moving the turrets down 1.0 mils and right 0.5 mils. During the next round of load testing, I'll be pretty damn close to POA-POI. Quote Link to comment Share on other sites More sharing options...
Bigbull Posted March 19, 2019 Report Share Posted March 19, 2019 (edited) Here you go 98 , I’m rebarreling a 260 rem AL rifle , it’s a 28 inch barrel , 1.2 behind the gas block , 1.156 custom gas block and then 1.125 almost to the muzzle then down to an inch for a for a bloop tube . It’s an x caliber blank ,1x6 twist 416 stainless . Did a deep recessed crown . Anyways here is a pic for you 260 rem guys! Oh yeah it’s a +2 gas tube! Edited March 19, 2019 by Bigbull Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 19, 2019 Author Report Share Posted March 19, 2019 That's some artwork, right there. Beautiful work. I had the chance to chrono this load - 2650 fps average - much better than I thought. It proved it, too, out there this weekend. 6.5mils of drop at the 845 yard target, and just drilling it... I had hits on 1010 yards with 9.0 mils of drop, and we had some very, very weird wind going on, with gusts to 20mph. This chart tells me I should be 8.5 mils of drop, and I'll try that on a day that's less crazy with the wind. If this is accurate, I'll be supersonic to 1500 yards with 17.2 mils of drop. That's unreal. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 19, 2019 Author Report Share Posted March 19, 2019 (edited) The brake on this gun is the VG6 6.5 Gamma. That brake just plain works, and I could watch every impact (or miss) on all the shots, right through the scope. It works very, very well. My final load from my Round 2 of load development was 43.0gr of RL-22, CCI200 primer, Hornady 308 Match brass resized to .260 Rem, necks turned with KM Shooting Products 6.5 neck turning tools, 2.785" loaded OAL, 2650fps out of the WC 20" rifle gas Tactical Hunter barrel. I was the onlyone to poke the 500 yard target. First round hit at 2 3/4 mil holdover (no dialing), saw what I got, and moved on. I'll take this all day long. There were several people shooting at the 842 this time - that's just where it ended up in the dirt, when we planted it on this one. I crushed that thing right out of the gate, with 6.5 mils of drop. Shocked the hell out of me. There weren't alot of guys hitting the 1010 yard target, but I was getting that thing with 9.0 mils of dialing. The hits were very impressive. This was mostly .260 Rem and 6.5 Creedmoor contact, here, and there's not a bad shot on this target - and not every shot did hit the target, either. It was a tough day on it. There was anywhere between 1.5~2.5 mils of wind hold to hit this guy - it was changing all the time. That's a 10mph wind minimum, right there, at 1.7 mils. Edited March 19, 2019 by 98Z5V Quote Link to comment Share on other sites More sharing options...
ARTrooper Posted March 19, 2019 Report Share Posted March 19, 2019 Nice, can't wait to see how mine will perform... just waiting on barrel Quote Link to comment Share on other sites More sharing options...
unforgiven Posted March 19, 2019 Report Share Posted March 19, 2019 Outstanding brother Tom you put out a $hit ton of great information. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 20, 2019 Author Report Share Posted March 20, 2019 1 hour ago, unforgiven said: Outstanding brother Tom you put out a $hit ton of great information. Thank ya, brother, I mean that. Anyone can do this stuff - it's just a little bit of math and about 70% Nerd Magic. I'm just a knuckle-dragging geek running the math, with a little bit of practice. Once you understand the mechanics in all of it, estimate range, read wind accurately (enough), understand your scope internals, apply proper shooting fundamentals - it's easy to out to 800 on these calibers. With the right loads, it's easy to do with 5.56. I pulled it of with 25/45 the first time I tried it, but that was 17 mils of drop... Fuk me, that was rough... After that 800 yards, you need to make sure you're right on all that stuff, to connect. I'm gonna Google-Earth some coordinates tonight - I'm pretty sure I've got 1300 yards available, with great visibility. That'll be coming up before it gets hot here - so, SOON... We had some wicked-fucked-up wind out there that day, with gusts to 20. It kinda sucked. Quote Link to comment Share on other sites More sharing options...
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