I did not jam the bullets. Maybe next time I fireform some brass i'll try that out.
.22 br
- Thread starter Dai Bando
- Start date
I would say your cases aren't formed and therefore the chamber isn't sealing off...
28.0gr and not jammed is a LIGHT load for 22BRA..
My 22BR Varget OCW was 28.2 - 30.0gr Varget with 90smk...
Next time I form brass I'll experiment with different methods. Jamming and also trying 28.5 and 29.0gr.
Here's a before and after from 28.0gr.
Unlike a dasher where you are moving the shoulder forward and changing angle, shouldn’t the shoulder of the BR case be touching the shoulder of the BRA chamber at some point? I thought this is the idea behind the Ackley Improved chamberings?
That's my understanding also but maybe I need to back off my 22 BRA sizing die a bit to get a better crush fit of the neck shoulder junction. That crush fit would help to seal off the chamber better. I recently fireformed Dasher brass also using 28.0gr of Varget and it formed up great and didn't have carbon leaking around the body of the die. And I think the reason why is because I'm crush fitting a .257 ID false shoulder into the neck and getting a good seal.
If you don’t have a slight crush fit like would be typical with an Ackley Improved then that could be the problem. Without a doubt the suppressor is keeping the back pressure up and sooting up your chamber. My guess is there is still gas pressure in the barrel when the brass cools enough and contracts that it gets between the brass and chamber.
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Most people chamber a bra to a br go gauge -0.004 to achieve a light crush on br brass to help with forming yes. If I were doing a 22bra, I'd just neck down far enough to where there's slight bolt closure resistance headspacing on the false shoulder in the neck area.
tried 28.0 gr varget and 2.35 coal for my first batch of 22 br w/ 88 eldm
also gave 30 gr varget a quick try with 62 eldvt, i forget what seating depth.
I have a 7 twist mullerworks 219 bore from southern precision. dunno the FB
groups worthless because i forgot to tighten my scope rail, so my elevation is all over the place.
chrono results
19 shots 88 eldm, avg velocity 2855, es 44, sd 10.9
3 shots 62 eldvt, avg velocity 3197, extreme spread 20
anyone have h4350 loads for 88 eldm? varget seems good but it doesnt fill the case.
also gave 30 gr varget a quick try with 62 eldvt, i forget what seating depth.
I have a 7 twist mullerworks 219 bore from southern precision. dunno the FB
groups worthless because i forgot to tighten my scope rail, so my elevation is all over the place.
chrono results
19 shots 88 eldm, avg velocity 2855, es 44, sd 10.9
3 shots 62 eldvt, avg velocity 3197, extreme spread 20
anyone have h4350 loads for 88 eldm? varget seems good but it doesnt fill the case.
Have you tried putting more Varget in the case? Seems you're a bit underloaded to me, unless that's a short barrel.
Uh.. you need to try a little harder than 28.0 one seating depth and saying it doesn't shoot.
I've been through 3 22BR barrels now and 6 or 7 different bullets and various powders.. 22BR hammers with varget. H4350 isn't ideal for 22br and doesn't come close to Varget, H4895, 4166, N550
Here's 9 shots @ 100yd out of your same barrel.. Mullerworks 7 twist 219 28"
28.5gr Varget 88ELD 0.01 off
I've been through 3 22BR barrels now and 6 or 7 different bullets and various powders.. 22BR hammers with varget. H4350 isn't ideal for 22br and doesn't come close to Varget, H4895, 4166, N550
Here's 9 shots @ 100yd out of your same barrel.. Mullerworks 7 twist 219 28"
28.5gr Varget 88ELD 0.01 off
There are lots of reports of people settling in at 28.5-29.5; my load with 88's was 31.3gr of RL-16 but you have to back down a bit with Varget, I saw the first hints of pressure at 28.5gr in my setup.
I'd start with a charge ladder to find where you see pressure; that will tell you when to turn back and find a good charge weight below that.
where did i say it doesnt shoot??? i'm gonna assume positive intent here and think you just didn't read my post
yeah 28.5 to 29.5 seems good and the simulation thinks that will top out at 61k psi with 90% case fill. According to the sim, H4350 would get to 95% case fill at a similar pressure level.
I can't velocity out of Varget, so my load is 31.4 RL-16 out of a 30 inch 1:7 McGowen barrel. COAL is 2.270. Velocity is 3026.
I get the best groups from Varget but for a 1000 I need velocity with OK groups and RL-16 does it.
I too am going to try H4350 down the road but my GRT simulations show it in between Varget and RL-16
David
I had horrible results trying to get H4350 to group. A lot of work and accuracy was nowhere near all the other powders I tested. 4166 is stupid accurate and fast out of my 28" Bartlein 7.5
That makes sense to me. It's still a bit over bore I think. Not as much as 22 GT or 22 Creedmoor. That said, PADOM has real world experience with several barrels. Maybe another powder in the H4350 area would do better? I always try for a good case fill, but accuracy down range doesn't always play by the "case fill rules"!
This is very similar to my N550/90smk load. I'm running 31.3gr N550 90smk 0.01 off out of my 28" MW 1-7 getting 2992 SD6 and it shoots consistently in the high 0.1's - low 0.2's...
Almost same speed. I'd very close to your RL16 speed if I had a 30in barrel vs my 28in.
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I haven't experienced any noticeable issues or big swings. I've shot it from 35F - 80F....I like it because it gives higher velocity with less pressure. It's my go to in 22GT as well. Much better results than H4350 in my 22GT.
I’m running RL23 in my 22GT. I will have to see about N550. Didn’t you buy a ton of “similar to N550” from some place too?
I did, 16lb of it. And it shoots identical to my VV N550. Same load, same accuracy, same speed.
16# , close to 4000 rounds down range.
I'm going to have to go back and see if anyone posted pictures of groups at , at least 500 Yds.
And here are a few 600yd groups with it on a pretty windy day. Vertical was great..
I actually didn't in 22BR looking at my data. I tested the 85.5's with n550 in my 22GT. Had a low and a high node..both shot 1/4moa and SD of 5 and 6
looks like reloder 16 is good for case fill, velocity, and accurate. now i just need to swallow my pride and order a 500 dollar jug. 
Where you located? I know a shop in NW WA that could at least save you shipping and hazmatlooks like reloder 16 is good for case fill, velocity, and accurate. now i just need to swallow my pride and order a 500 dollar jug.
Haha ok not as far “west side” as you’d need to be
What powder was it? I thought it was MP 610 which is OSS, but their description now says it's a ball powder similar to StaBall.
I don't remember the exact MP number. I'll look the next time I'm in the shop. Says N550 right on it
It says MP610.. I actually bought 24lb of this. Here the label. I also have 2 of these N555 ones I haven't tested yet along with the 4451...
I also have these as well. The N133 is dead on to VV N133 in 223rem, I've shot a bunch of it as well.
I also have 24lb of MP540 which has 308 and 223 data on the jug but no "similar to language." All reports I've read on this one people raved about it and said it was almost identical to N140 but a tad faster, close to 8208. I haven't tested it yet
I also have these as well. The N133 is dead on to VV N133 in 223rem, I've shot a bunch of it as well.
I also have 24lb of MP540 which has 308 and 223 data on the jug but no "similar to language." All reports I've read on this one people raved about it and said it was almost identical to N140 but a tad faster, close to 8208. I haven't tested it yet
Seams the one site I found ? is out of all their MP powders .
Padom , are all the MP powders you have ball powders ?
Padom , are all the MP powders you have ball powders ?
heads up to you (sorry if you already knew this) but "midwest powders" is just the name American Reloading sells bulk powders under. They're often the same formulation as canister powder. there's a scam site that claims to sell it but only american reloading actually sells them. they do sometimes get stick powders in - i've seen them sell "like 8208" and others before.
No, they are not all ball powers. All the MP powders that say equivalent to say N133, N550, N140 or 8208, 4451 are all stick powders and look just like the actual equivalent to powders I also have on the shelf....
Yea, I think the days of this being a hidden gem/secret are over. I was buying 16 to 24lb at a time of all this stuff for years at sub $100 per 8lb. But American is always out of stock now and the prices arent anywhere the crazy good bargain they used to be..
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looks like reloder 16 is good for case fill, velocity, and accurate. now i just need to swallow my pride and order a 500 dollar jug.
My load for 85.5 is 31.4 rl16 at 2.270 coal in a 30” 1:7 mcgowen with 450’s. I am getting 3057. I have 4 lbs of rl16 but seeing that it is really good for the heavies i just ordered 8 lbs myself. I about chocked myself. $500+
But now i have a lifetime supply
David
I don’t know yet either but i was getting a little over 2k with my 6x47L so i was figuring that this is even a little more overbore that i would get 1800 or so.
I am interested to hear what others are getting with 1:7. Based on my calculations I have 12 full pounds of rl16 is over 2600 rounds which i am betting is more than this barrel will do.
David
Depends on how you decide a barrel is done, I suppose. I'm at 2500 rounds running a very similar load, 1:7 twist, 24" barrel with what I presume is a 0.218" Bartlein bore. It had slowed down less than 20 fps at the 2000 mark, then I changed bullets and primers so hard to say after that. But it was still cheerfully sub-MOA at the 2500 mark, landed the best placement I've ever had at a local PRS regional match with it.
At this point I don't think I'd take it to a 2-day, but it should still be fine for training. Wouldn't surprise me at all if it made 3k, I'll probably take it that far via training.
I was gonna say, 2000-2500 mark is what Im expecting my first one to go out at....maybe 3000. But again, that depends on a few factors. PRS styler shooting, hotter loads, 218 vs 219, specific powders, etc. All of it matters. I run a VERY MILD 3000fps 90smk load that just plain hammers in my 2 barrels so we shall see.
Hey guys so I'm wanting to do a barreled action with a curtis Valor and a brux barrel mtu contour, I want either 22br or 22bra still deciding is there any advantage one way or the other? Also planning to go with the sac dies for sizer and seater. I wanna build it around the 85.5 Berger. What twist and freebore should I do?
I got 0.130” freebore and wouldn’t have minded more, like 0.150-60”. The bottom of the bearing surface juuuust clears the neck/shoulder junction, would be nice to have a little more margin there just for my peace of mind.
What twist do you run and what would you recommend if building around the 85.5 I'm thinking 7.5
