88 TMK Loading Thread

[rafiki]

Does anyone have a cut-away photo of the 88 TMK?

Also, does anyone have a suggested recipe for load/powder for running it in a Tikka with an 18" PBB barrel? I'm looking for something to start with that is the easy button.

which cartridge? everyone in this thread is working on the recipes...
i had light ejector marks on a brand new 16.25" PBB 22 creed yesterday with min 4831sc / staball hd loads so am going to run some more factory 80 elds thru it to get the round count up before revisiting

 

[Nine Banger]

Also, does anyone have a suggested recipe for load/powder for running it in a Tikka with an 18" PBB barrel? I'm looking for something to start with that is the easy button.

Every post of mine in this thread is with a Tikka and an 22 Creed 18" PBB barrel...

 

[NWBLKTAIL]

I'm trying to get to the same conclusion and I think the answer is generally yes. I'm at sea level and I'm concerned about that...

Same livin on the coast, but I ordered brass and 100 bullets. I’ll spin the barrel on, if it doesn’t work out there are plenty of guys on here who will use them.

 

[FB Trout]

Looks good... Assuming 1:8. Care to share your DA or Altitude?

Yes, 1:8 twist and DA of 4300'

 

[glock233]

which cartridge? everyone in this thread is working on the recipes...
i had light ejector marks on a brand new 16.25" PBB 22 creed yesterday with min 4831sc / staball hd loads so am going to run some more factory 80 elds thru it to get the round count up before revisiting

I’m an idiot. 22CM

 

[rafiki]

any help/advice on diagnosing my issue or what you’d try next?

tikka 22cm
PBB 16.25” 1-7.5tw .120 FB (brand new)
rs1.2
scythe ti
DA 3,150 ft

first 6 rnds thru the barrel were factory 80 ELDX to zero scope avg 2,932 fps

load 1
-88 tmk
-43.5 gr stball hd
-peterson lrp (unfired)
-cci 200
-2.7 coal
-2,600fps

load 2
-88 tmk
-38.5 gr h4381sc
-peterson lrp (unfired)
-cci 200
-2.7 coal
-2,524 fps

only shot a couple rnds of each hand load bc i saw light ejector swipes and heavier bolt lift. shots were spaced out 1-2 minutes. bullets were seated to 30 thou jump in my chamber based on modified case and hornady oal gauge.
lots of new variables at play so not sure if i just need the barrel to break in more or if i should be looking at one specific element on the loads/rifle system.

 

[mtnbound]

Anyone shot them in an 8 twist barrel?

I couldn't get the 88 eldm's to shoot, but hoping these may work.

Ran in my 1-8 Tikka with no issues but COAL needs to be 2.4” min IME.

 

[AndrewMT34]

Understood, I'll be shooting them in a 22creed, so COAL shouldn't be a problem.

 

[43.6N]

88TMK
223 Wylde. 18” PBB
Seated 2.490”
Lapua Brass
CCI 450

23.0gr 8208XBR
-2657fps

23.0gr H4895
-2685fps

23.5gr Varget
-2634fps

I zeroed off the Varget load.
Then took it out to distance to eval the 0.525 bc.

Still conditions.
3200ft DA

746yds - 6.2 mils
First round impact.
Retained velocity 1600ft.

1156 - called for 12.8 mil.
Ended up using 12.5 mil.
Retained velocity 1232.

that’s good enough for me.
I’ll probably hunt bears with the Varget load this spring.