6 creed and 115 DTAC FB?

[NVScout]

what FB are you guys using for the 115’s ? Also what NK dia. For alpha brass ?looking at a .176FB and .276 neck or a
.136 FB with a .275 neck.
I also contacted alpha about their brass and they said their 6 creed is .2715 loaded.

 

[rardoin]

I have a .145" free bore reamer/chamber and with the 115 DTAC's seated 0.015" off puts the boat-tail orgin just below the neck/shoulder junction...which is pas bon for me. I switched to a 106gr bullet and will retest the DTACs after a couple of hundred more rounds; the effective FB after erosion will likely allow them to be seated out enough to get the bearing surface completely in the neck. If you are committed to the 115's then I would favor the .176 free bore chamber.

 

[NVScout]

I have a .145" free bore reamer/chamber and with the 115 DTAC's seated 0.015" off puts the boat-tail orgin just below the neck/shoulder junction...which is pas bon for me. I switched to a 106gr bullet and will retest the DTACs after a couple of hundred more rounds; the effective FB after erosion will likely allow them to be seated out enough to get the bearing surface completely in the neck. If you are committed to the 115's then I would favor the .176 free bore chamber.

Where does the .145 put the 105’s ? Have you tried 110 MK’s

 

[rardoin]

Where does the .145 put the 105’s ? Have you tried 110 MK’s

The 108 Bergers and 106 EPS have the Bearing surface completely within the neck with plenty of neck remaining to 'chase the lands' as the throat erodes.

 

[jaygorski]

what FB are you guys using for the 115’s ? Also what NK dia. For alpha brass ?looking at a .176FB and .276 neck or a
.136 FB with a .275 neck.
I also contacted alpha about their brass and they said their 6 creed is .2715 loaded.

I have a .136FB with .275 neck, 41.3grs H4350 puts 5 usually under .5" at 200yds with BN coated DTACs, and yes, loaded Alpha brass measures .2715"

 

[NVScout]

I have a .136FB with .275 neck, 41.3grs H4350 puts 5 usually under .5" at 200yds with BN coated DTACs, and yes, loaded Alpha brass measures .2715"

How far in the case are those and what’s the coal?

 

[jaygorski]

How far in the case are those and what’s the coal?

Pressure ring s just inside the shoulder, oal is just shy of 2.8"

 

[NVScout]

Does any one know size differences between the 110smk and 115?

 

[NortexDM]

Overall length is 1.341 for the dtac and 1.340 on the smk. Not sure what the length off ogive is though.