I remember real well the last shot I made with my 9 twist .22-.250 loaded with 53 Vmax's & IMR 8208. The barrel had been used for 4 years & had about 3000 rounds thru it. It was also used with 68 grain Hornady HPBT's and 69 grain Barnes match burners. All sorts of powders - IMR 8208, H414, H380, RS Big Game, & H4350. This big reddish colored PD appeared about 275 yards out & I held right at the top of its head and SPLAT. I had second thoughts about the re-barrel job but went ahead and had it done.
I longish throated chamber & 14 twist sounds like a dilemma.
I longish throated chamber & 14 twist sounds like a dilemma.