What i wonder is how would the rifle shoot if loaded with BH209? What i wonder is how would the rifle shoot if loaded with more powder? The standard load used in my X7 is 110g BH, 300g Deep Curl, crush rib sabot, and W209 primer. The crush rib sabot is a very tight. Makes me wonder how your rifle would do with a a 0.458 bullet?

From here, it looks like you did a superior job bedding the barrel, and a superior job cutting the barrel. Perhaps working the crown will help. If it is square now, you won't be able to make it more square, and your results won't improve after crown work. Right now, it seems what you basically have is a target crown without protection.


It may very well be that the easiest/best fix will be to use BH209. Knowing how you detest the powder, makes me hope it is the best fix!

Actually, your shooting is better than what i myself could have done. It could very well be there is nothing to fix. Perhaps using the long sabot will provide a tad better accuracy. Keep up the good work!!