View Full Version : need some advice on 1680
Recusance
10-14-2011, 09:57 PM
I just loaded some 220 SMK over 15.0 grains of AA#1680. soft shooting for a super sonic yet cycled my 10.5" and 16" guns perfectly.
also loaded some SUB's 220 SMK over 10.1 gn of 1680 also cycled both guns well.
so now I want to load some 110 Vmax with 1680
what would be a good starting load?
N310toN170
10-18-2011, 02:38 PM
What are you using for an OAL?
2.10" with a VMax 110 over 1680, 19gns should put you at about 1900 fps from a 16" barrel and about 90% case capacity...you can work up or down from there accordingly.
I wouldn't recommend seating the VMax's any longer than that because 2.1" already puts you at only ~4.5mm seating depth assuming a 1.355" case.
rsilvers
10-18-2011, 10:54 PM
I would go 2.068 for the 110 V-MAX. Putting it out too far reduces neck support, and also starts to hit the rib.
rumlover
10-21-2011, 10:13 PM
Just shot some today and got two 3/4" 10 shot groups at 100y. 18.5gr of H110 got me an average of 2345fps. COL was 2.075. Upper as a factory Noveske 16". Cycled well and ran clean.
Colohunter
10-30-2011, 01:50 PM
1680 is great for sub loads. I use it for both 220 and 150gr sub loads, but I still use H110 for supers. I don't know that you will get as much velocity out of 1680 when you load it supersonic.
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