Sierra 88 TMK Load Data

Anyone playing with 22 Dasher and these?

I've got a fetish for "obscure" cartridges. The idea of one in 16-18" barrel seems cool. If it won't be a lot slower than a Creed. Don't want to do GT.

I have a pile of dasher brass, and a 16” 6dasher Howa mini. I also have a 16” 223ai mini.

I may get a 22dasher barrel down the road, but it’s hard to want more than 2750+ from 16” 223ai with these bullets for what I do.

There’s a fella here that shoots a 22dasher but shoots smaller bullets. @Benchrest Braxton he may have some good information for you
 
Anyone playing with 22 Dasher and these?

I've got a fetish for "obscure" cartridges. The idea of one in 16-18" barrel seems cool. If it won't be a lot slower than a Creed. Don't want to do GT.

I have a 22 dasher reamer on order. Looking forward to messing with it.
 

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223 Ackley

25.5 n540 for 10. No pressure signs. Going to go to 26 which is about 1.5 over standard 223 max and load up as many as I've got components for. Hoping to get closer to 2700.
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Yes sir. It’s a 7 mph gun and maintains 1800 fps to 700 yards at my typical Density Altitude.
That's really good. I'm amazed at the velocities some of you guys are getting from those little 16" barrels. I'm only 1/2 grain off your load but I'm only getting 2590 from a 20 in barrel. It is a factory tikka 8 twist tho.
 
I want to make the 88s work, as they just look like they should be shot at an elk... but even with the 7 twist barrel in my Savage, I'm just not sure I can get enough velocity to justify them without pushing things. Or AI'ing it. Or both. But the 77 is no slouch... and I'd probably never shoot at big game beyond 500 anyway.

Seeing some folks get up into 2700 without AI gives me some hope, but the throat in my Savage is only going to allow 2.40ish OAL so that may hold me back (but also feeds from factory mags).

I ordered 500 77 TMKs recently, but I'm still trying 88s in the mean time.
 
Not making things easier. What velocities are you getting out of the 16”? When I did calcs at 4000’ DA I was only seeing roughly 50 extra yards difference to 1800 fps but I could have fat fingered my 77 velocity



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