26" .308 ocw

[918v]

After reading the MK316 thread I decided to work up a load for a 26" barrel. I believe that OCW is tied to OBT so barrel length matters. The MK316 load consists of a 175SMK and 41.8grs of IMR4064 in a Federal case and primer at a 2.800" OAL. I believe this load is optimized for a 24" barrel per my QuickLoad calculations. It also prints to the left if my point of aim in my 26" barrel.

So I optimized the load for my 26" barrel and Winchester cases using OCW/OBT and QL. According to the software the optimum load is 41.5grs of 4064. I loaded five batches of three rounds for three different primers: 41.1, 41.3, 41.5, 41.7, and 41.9grs of 4064 with FC210M, CCI200, and WLR primers.





It looks like QL is right on the money with the 41.5gr load.

 

[Dan Newberry]

It does look very good!

 

[Dan Newberry]

And the 2.800" OAL looks like where to stay. You nailed this one...

 

[sharpshooterbr]

Looks to me like 41.5 gr, 2.800 OAL and the CCI 200 primers if your sd and es look good on the chronograph. Nice work!

 

[D_Lamz]

damn fine shooting!

 

[918v]

Here's today's OCW. I switched bullets to the Nosler 175 CC which is .020" longer than the SMK. QL recommended 41.3grs giving the OBT.