As previously mentioned, the short barrel is costing you velocity. How long of a barrel is on your 30/30? What bullet weight are you using for the 30/30? Unless you use a chrony, you will not know the velocity of the bullets.
What caliber/cartridge are you shooting in your Ruger Frontier? If it is a .30 cal try a 165 gr bullet. The 165 gr. bullet is designed for deer sized game, and a heavier bullet usually spends more time in the barrel. This may give the powder a little extra burn time.
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