Varget is too fast. Barnes website says:
25-06 80 gr TTSX
62 gr H4831 SC 3556 24" or
Hybrid 100V 57.5 3814 (both max)
If you have a l-o-n-g barrel like my 1890 WY Centenial 28" with the weird 1 in 13" twist, 7828 can really get it rolling. Speed Goats beware!
