.22 br
- Thread starter Dai Bando
- Start date
Been a while since I did any shooting with my 22BR, had a baby girl 12/27, wife was in hospital 2x with post pregnancy serious infection. Sleepless nights and slammed busy with work. Thank god thats behind us! haha. Shes 7 months now, everyone is good and getting more sleep these days. Finally a little time to play with some of these projects.
So my custom 22BR reamer came from Manson a few months ago, been sitting in the shop. I have a Bartlein 1:7.5 HV .218 blank that PVA will be chambering this week with my new reamer. Tightened up the neck a little, 0.254 and 0.130 freebore. Also have a 22GT Osprey that Ill compare to the 22BR. So how much faster it is with same bullets and barrel life
So my custom 22BR reamer came from Manson a few months ago, been sitting in the shop. I have a Bartlein 1:7.5 HV .218 blank that PVA will be chambering this week with my new reamer. Tightened up the neck a little, 0.254 and 0.130 freebore. Also have a 22GT Osprey that Ill compare to the 22BR. So how much faster it is with same bullets and barrel life
Never been a BR/BRA/BRX or GT guy, just a 6.5G and 6.5x47L, but the squat little cases with a .224 bullet sitting on top is starting to intrigue me.
Please excuse the JV question, but what would the velocity look like when comparing say the 22 Grendel, 22 GT, 22 BR, and 22x47L?
I know I wouldn't go with something as large as 22 Creed due to the barrel life, but what about the little guys from the Grendel on up? Does the 22x47L also get into barrel burner territory based on the case volume?
Thanks
Please excuse the JV question, but what would the velocity look like when comparing say the 22 Grendel, 22 GT, 22 BR, and 22x47L?
I know I wouldn't go with something as large as 22 Creed due to the barrel life, but what about the little guys from the Grendel on up? Does the 22x47L also get into barrel burner territory based on the case volume?
Thanks
26" 22gt, with 90s and H4350 I never found pressure working up to 3270fps, close tho, alpha brass was just starting to show the ejector slot from the bighorn bolt. I run it at 3100. Good accuracy at 3200 as well, but why burn the throat. I'd think the 22x47 would likely top out 3320-3350. 22creed, mine will push 88s just under 3400......from a 22" barrel. Due to the overbore, i bet a 26" would make near 3500, but jackets may fail. All my fast twist 224 barrels are 219 bore diameter, 8 twist I dont think it matters as much unless you're trying to push lighter bullets at mach speed. If I were to persue a br based variant, I'd go 22 bra with alpha brass. You lose very little to the dasher, but gain fair bit over br. Cases dont grow, they hold pressure very well, long neck is generous for various bullet lengths. I really like my 6bra, stupid accurate rifle.
Just loaded a dummy round for my smith....Lapua 6BR brass resized with a cheap Redding full length sizing die, expanded with a .223 mandrel and seated a Berger 85.5 LRHT to 2.330" COAL. Can't wait to start load development for this little cartridge!
Results from taking the new 22BR barrel out. 28" Bartlein 1-7.5 Heavy Varmint with my new 22BR reamer I had Manson make for me. 0.130FB and .255 neck on my TL3.
Loaded up 100pc of brass with a mild load from my other 22BR barrel...29gr 4166, CCI 450, 1xLapua, 88 ELD 0.015 off lands.
Chrono 10 shots 3020.... SD6
After 6 shots zeroing I shot this 1st 5 shot group. Good start.
0.274"
300yd
0.952"
0.604"
0.600"
400yd
0.707"
1.296"
Loaded up 100pc of brass with a mild load from my other 22BR barrel...29gr 4166, CCI 450, 1xLapua, 88 ELD 0.015 off lands.
Chrono 10 shots 3020.... SD6
After 6 shots zeroing I shot this 1st 5 shot group. Good start.
0.274"
300yd
0.952"
0.604"
0.600"
400yd
0.707"
1.296"
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Man that's so sweet. Good shooting! Makes me want to put a 22bra reamer together. Get away with a lil slower burn rate, run a tad bit more velocity. Plus I already have the dies for 6bra.
Its the Ridgeway Blue option XLR offers...... I have XLR Envy's in Black, Tungsten Grey, Burnt Bronze and Ridgeway Blue... I think Tungsten Grey is my favorite.
A lot of guys neck straight down with .249.....but I do it in 2 steps...neck down half way the finish sizing down with .249 then run it through a mandrel
Padom, any benefits you see doing it this way? Getting ready to have a barrel spun and have the 85.5’s ready to go.
I do it this way for better concentricity, less chance of collapsing shoulder or splitting necks....I had 100% success rate on 500pc of Lapua....
One thing that cost me a few pieces of brass was insufficient outside chamfer. Once I put a good chamfer on, I did all my necking down in one step. Used a honed Forster die, went straight to my target neck OD (0.004" under loaded).
Anyone have a JGS 255nk 130 freebore(225 diameter) they'd be willing lend to Manzella Precision to chamber my new barrel? I'll pay a wear/tear fee and all shipping.
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Pretty sure I do, let me get back to you tomorrow.
ETA: It’s a Manson though
ETA: It’s a Manson though
@padom are you neck turning on the new 254 nk chamber? Seems like most are using 255nk.
Curious what loaded neck diameter you guys are getting with necked down unturned lapua? I figured it'd be around 0.250", speccing out a reamer for order right now.
I don't have br dies, so I'm looking at Wilson or Harrels FL bushing dies. Might as well go with the a 6br die, as it's multi use over the 22br available from Wilson.
Curious what loaded neck diameter you guys are getting with necked down unturned lapua? I figured it'd be around 0.250", speccing out a reamer for order right now.
I don't have br dies, so I'm looking at Wilson or Harrels FL bushing dies. Might as well go with the a 6br die, as it's multi use over the 22br available from Wilson.
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
I just checked my print...my new reamer has a .255 neck not .254! My mistake...the PVA had a .256 neck...I tightened it up .001
I've found amp 6br aztec anneal code to be 152-155 depending on load psi, anyone use the aztec for 22br? Is it near 165/170 to heat the small necks up? Lapua 22cm turned is 175 aztec in my testing.
For every Aztec setting I have analyzed it comes back with a four digit code, screenshot from the AMP website is shown below...
200 pieces of brass necked down and picking up my barreled action on 10-19, can't wait to get some rounds down range!
Finally 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........
Hello Ballisticdaddy, on your stock there is a soft cheek pad. Is that commercially available or custom made? Thanks.
I will get velocities this week at the 27.9 loading. I don't do velocity until I get a good group.
Sorry.
Doc
Anyone running lighter bullets? Shorter freebore? Just curious. Pondering a low recoil hunting round, 77tmk have an excellent reputation for killing deer even elk with proper placement. Would likely be a 20" pipe for supressor use.
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.
Edit for grammar.
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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 5.0
Well I found a load my rifle loves. 75gr eldM seated to lands and 28.9 of varget. Gonna get some velocities this week at some point. .4 MOA in 7 groups this past Sunday.
Doc
Doc
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 3189 average. 7SD with 27 ES.
100yds for groups
ETA: velocity/distance for groups.
Pics of groups. Colored box is a 1/4". All groups are 5rds.
100yds for groups
ETA: velocity/distance for groups.
Pics of groups. Colored box is a 1/4". All groups are 5rds.
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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?
Sorry 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
Doc
