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Nope and have plenty of clearance. I tightened my neck up a hair because of my fired vs loaded neck diameter difference. Leaves me .002 per side
For every Aztec setting I have analyzed it comes back with a four digit code, screenshot from the AMP website is shown below...I am getting an AZTEC code of 155 for my 6BRA and 158 for the 22BR.
I anneal every firing and both shooting very well.
What are y'all trimming your brass length to?
Doc
I will get velocities this week at the 27.9 loading. I don't do velocity until I get a good group.Doc68, any velocity readings on your loads?
These cheek pads are made by Wiebad...Hello Ballisticdaddy, on your stock there is a soft cheek pad. Is that commercially available or custom made? Thanks.
I'm unning the 75eldm from an 18" 22cm. Loads sub moa at 400y with no powder tune, just some seating depth tweaks. Running 3100fps. Shot two mulies yesterday morning. First was large body buck at 275y(2600fps impact), in the crease, did a 50y death sprint and piled up, massive lung trauma, deer bleed out profusely from the mouth before I got to him, no blood as I cut neck, it was all in the boiler room and on ground. Nickel entrance through a rib, exit was quarter size throug a rib. Next was a younger medium body buck, 475y(2250fps impact), strong crosswind, but my nephew who's never killed a deer, put the bullet at the neck shoulder junction, pencil entrance, quarter exit. That deer was lights out. I was impressed with bullet performance. This load is no pressure, and is only 40gr H4350 I feel another 150fps is on the table. I also only have 65 rounds down the pipe but has already speed up 50-60 from first 20 rounds.I'm gonna be loading up some 73gr ELDM today and gonna shoot. I have .050 freebore.
Doc
What twist is the barrel?I'm unning the 75eldm from an 18" 22cm. Loads sub moa at 400y with no powder tune, just some seating depth tweaks. Running 3100fps. Shot two mulies yesterday morning. First was large body buck at 275y(2600fps impact), in the crease, did a 50y death sprint and piled up, massive lung trauma, deer bleed out profusely from the mouth before I got to him, no blood as I cut neck, it was all in the boiler room and on ground. Nickel entrance through a rib, exit was quarter size throug a rib. Next was a younger medium body buck, 475y(2250fps impact), strong crosswind, but my nephew who's never killed a deer, put the bullet at the neck shoulder junction, pencil entrance, quarter exit. That deer was lights out. I was impressed with bullet performance. This load is no pressure, and is only 40gr H4350 I feel another 150fps is on the table. I also only have 65 rounds down the pipe but has already speed up 50-60 from first 20 rounds.
7tw osprey 219 bore at 18" I will likely run 88s for hunting at around 3000fps or so. Faster velocity makes em prone to over expansion for splashy results on game. My 22br reamer is ordered will be 0.140 freebore for heavies like the 90atip. My 22cm is freebore at 0.120 and works with 75s seated 37k off lands. They're well above neck shoulder junction. As throat wears away I'll likely switch to 77tmk as the bearing surface is quite a bit longer.What twist is the barrel?
Got the Labradar out this weekend and settled on charge weight of 29.1 grains of Varget which got me 2,992 FPS with ES of 9 and SD of 5.0Finally got some time to get some rounds down range, started with seating depth while the barrel speeds up. Starting load of 27.0 grains of Varget with the Berger 85.5 hybrid seated with .005 jump gave me 2,832 fps. Group shown below are shots 9-11 out of the Benchmark 1:7.5 twist in MTU contour finished at 26" and for those that believe shooting suppressed compromises accuracy........
View attachment 7986835 View attachment 7986837 View attachment 7986840
100 yards? And that colored square looks to be 1/2" if those are 22-cal holes.So my load with 28.9gr and 75gr ELD sitting on the lands and CCI450 primer with Lapua formed brass and shoulder set back .002 Sizing with a .249 bushing gives me .002 neck tension is 2978 average. 7SD with 27 ES.
Pics of groups. Colored box is a 1/4". All groups are 5rds.
View attachment 7995705View attachment 7995706View attachment 7995707View attachment 7995708View attachment 7995709View attachment 7995710View attachment 7995711
Sorry yes the box that is colored is 1/2". I got jumbled thinking about the smaller boxes above the grouping.100 yards? And that colored square looks to be 1/2" if those are 22-cal holes.
What's your use case? Did you try any jump?
Ah, gotchaSorry yes the box that is colored is 1/2". I got jumbled thinking about the smaller boxes above the grouping.
Yes 100yds. It weighed in with water at 38.6gr of capacity. My charge of 28.9 was a bit below the shoulder. No jump yet. My freebore is .035 from the reamer my gunsmith used. Iay have him push it out to be able to use the heavier bullets.
Doc
Strelok show it supersonic out to 1525. At 5300ft elevation here in CO.Ah, gotcha
Right? Honestly this little cartridge impresses the hell out of me. 0.4 more mil wind hold in a 10mph crosser at 1000 yards versus my 147gr ELDM load in 6.5CM, for less component cost and vastly less recoil.Strelok show it supersonic out to 1525. At 5300ft elevation here in CO.
Doc
There is absolutely no felt recoil in my rifle. It's a Kelbly Prometheus Left hand Short action with an Osprey barrel from PVA that is the proof heavy barrel. It's 1" at the muzzle. Thing is heavy as hell.Right? Honestly this little cartridge impresses the hell out of me. 0.4 more mil wind hold in a 10mph crosser at 1000 yards versus my 147gr ELDM load in 6.5CM, for less component cost and vastly less recoil.
Fun toy for sure.
On the burn chart Ramshot TAC is about equal to H4895 and if you have a reloading manual or search the interwebs.....Anything peeps......
Doc
I did, shows a max charge of 25.8gr per Sierra. However when I run that through p-max, it shows it as a very low charge and pressure.On the burn chart Ramshot TAC is about equal to H4895 and if you have a reloading manual or search the interwebs.....
View attachment 8005574
I found some lapua. 350pcs 3x fired and 200pcs new. Both my barrels are getting cut soon to my origin, Mullerworks 219 bore 7tw 4r hvy varm, and a hawkhill 219 bore 7tw 4gr comp, both will be finished at 28". This is sad to say, but I'm more excited about this cartridge than any the others I shoot. I have 2k 90gr smk, 2800 88eldm, and around 2200 90 atips. Plenty of bullets to burn both barrels. These will likely be practice rigs as I have a 6gt and a 25cm that get brought to matches. I'll be experimenting with 4166, rl15.5, Varget, H4350 to find the best accuracy.Should have no problem with alpha brass with a .255 neck reamer.
My 22br reamer shipped, 255nk, 130k freebore, 225 freebore diameter. Anyone mess with alpha ocd 6br brass necked down? Lapua is tough to get right now. I don't want to neck turn, and Alpha is usually as thick, or thicker than lapua. I have 1k 85.5s, and 1k 88eldm to play with currently.
I found some lapua. 350pcs 3x fired and 200pcs new. Both my barrels are getting cut soon to my origin, Mullerworks 219 bore 7tw 4r hvy varm, and a hawkhill 219 bore 7tw 4gr comp, both will be finished at 28". This is sad to say, but I'm more excited about this cartridge than any the others I shoot. I have 2k 90gr smk, 2800 88eldm, and around 2200 90 atips. Plenty of bullets to burn both barrels. These will likely be practice rigs as I have a 6gt and a 25cm that get brought to matches. I'll be experimenting with 4166, rl15.5, Varget, H4350 to find the best accuracy.
1:7, 1:1.7 or 1:8I run 29.3 15.5 with 85.5 hybrids. 3012 out of my 26”. It’s a .218 bore though.
Ive shot 88s out of an 8tw rock creek 22 creed, no issues, but my DA is usually 3-6K season pending, and they were moving 3200+ fps.Anyone having luck with 1:8 with bullets in the 80gr or heavier
But I’m curious about the 8 twist 22brIve shot 88s out of an 8tw rock creek 22 creed, no issues, but my DA is usually 3-6K season pending, and they were moving 3200+ fps.