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@celltech can you provide more details about the effect of lubing the firing pin. I assume you are concerned with the lube accumulating dirt, or additional resistance in cold weather?

I use Aeroshell 64 which is the same as Aeroshell 33MS. I would also consider the nickel based anti-seize.

@Gungnir388 I would think that the loads you are planning to try with the 4064 will be too hot. You might want to recheck your data.

Perhaps I am misunderstanding the question, but I think that your math is off. The 360 degrees should be dividing the circumference of the barrel not the thread pitch. 3.1416 x diameter of barrel /360 degrees will give the distance of travel ex 3.1416 x 1.25 / 360 = 0.010” of movement per...

I downloaded it about a year ago. I find it cumbersome to use compared to some of the other apps. maybe I just need to use it more ??

I have 2 deadlines as well. One is dedicated for 223, the other I switch between 6.5x47 and 308. I have the original springs. I have never had a single issue with either rifle.

I don’t imagine you have much to complain about with that group.

I expect they would shoot well in your 1-9 twist. You should be able to go heavier even. I shot the 69 SMKs in my 1-9 barrels. My shooting partner tried the 60 gr TMKs in a 12 twist 223 Rem. Best he could achieve is 1.5” group at 100 meters. He seems to be able to get 60gr Vmax to shoot though.

I have a 308, 65x47 and a 223. They all shoot great. I prefer to shoot the 223. It has a 26inch barrel, 7 twist barrel. Shoots the 75gr and 80 gr bullets extremely well. Shooting costs are lower, and gives the chance to practice wind reading.

I’m a heathen fan as well.

Stainless steel fasteners may be more susceptable to galling, especially if the SS screws are engaging into a SS action. Don’t forget to lube the threads.

I have one, it shoots well

Must have been my poor wind reading abilities! Lol

I have a 1/7 for my .223, mounted on an Ultimatum Deadline action. I am happy with it and will be ordering one in 6.5x47.

If you bought everything as a kit it may already be configured. I bought the complete kit from CE and it was plug and play.

I did not have to trim the screw. However I did shim the rear tang 0.007” to ensure a smooth travel of the bolt when the action was torqued. Poly Mdt mags would not work with the deadline because of the action design, but the cadex mags worked very well.

Deadline Ultimatum MPA Comp Chassis IBI barrel 223 Rem 1/7 twist Triggertech special Mpod bipod Cadex mags Flawless operation

^^^^^^^^^^ This is the correct answer

Dwell time in the hot chamber likely raised the temperature of the round affecting the velocity.

It is not the first time that I hear of this problem with Alpha brass. Try a lighter load.