Loading for 90gr scenar bullets

[thane]

Does anyone have any load data for 6mmBR using H4895 and Varget for 90gr Scenar bullets?

Thanks

 

[KevinThomas]

A quick look at the Sierra 5th Edition shows 100 grain data for the 6mm BR for both Varget and IMR4895. These should serve as a good starting point for working up loads for the 90 gr. Scenar. With IMR4895 and the 100 gr SPT, they started at 22.3 grains and worked up to a max of 25.2. The Hodgdon H4895 should be very close to this. With teh Varget, they went from a start of 21.1 grains, and went up to a max of 27.5 grains. Again, there were done with their 100 grain bullets, but should provide safe starting points for the Lapua 90 grain Scenar. Just watch your pressure signs and work slowly, and you should do just fine.

Hope this helps,

Kevin Thomas
Lapua USA

 

[thane]

Thanks Kevin.
Also, I just was thinking I should check the Hogdon Web site for their loading data.

 

[Laurie]

thane,

I tried 90gn Scenars in my early days with 6BR, but they didn't do as well for me as the 105gn Scenar, or Berger VLDs, so I dropped them. Here's what I got for what it's worth.

All loads in Lapua brass, 28" Border 1-8" twist 4-groove heavy-target profile barrel, minimum SAAMI no-turn chamber (very tight - I have to run cases through a Redding small-base die when new and then every five firings or I get very hard extraction).

I tried Reloder 15, VarGet, H4895 and (briefly) Viht N540, the last giving the poorest results.

Fed 205M 29.0 - 30.9gn Re15. 30.3gn gave 2,847 fps and 30.9gn 2,950 fps

Fed 205M 28.0 - 31.3gn VarGet. 30.2gn was the heaviest load chronographed and it gave 2,888 fps. Primers started to crater (Rem 700 action, firing pin not bushed) at 29.8gn.

The sweet spot in my barrel was in the low 29s so I reran 29.0-29.9gn in 0.1gn increments, 29.9gn giving 2,846.


90gn Silver (factory Moly) Scenar
CCI-BR4 28.0 - 30.0gn H4895. Top load gave 2,912 fps. Much smaller MV ES than with VarGet or Re15.

With unbushed Remy, I can't run as hot as many do without piercing primers, so none of these loads should be really high pressure.

Accuracy wasn't dreadful with the 90s, just didn't do as well as I expected. The sweet spots ran at around 0.4" with 5-shot 100yd groups, the not so sweet loads double that except for N540 that it just didn't like and shot around the inch. Moving onto the 105 Scenar produced more small groups and 105gn Berger VLDs in the lands finally cracked it so far as this rifle and barrel were concerned. Other 6BR owners I know get good results from the 90 though.

I hope this helps a bit.

Laurie,
York, England

 

[thane]

Thanks Laurie
I hope I have better results than you had. My barrel has 1:10 tw, which should be idea for these pills.
I will repost when I have some results.

Thane