About cleaning the bore...
If you try some of the more expensive subsonic ammo you will no doubt notice the really slick lube on the bullets. That lube is very important to accuracy. To illustrate: I have shot a good number of rounds of Wolf Match Target which has a very slick lube on it, followed immediately by far less expensive ammo with little to NO lube on the bullets. What I have seen is that the cheaper ammo will often shoot very tight while the seasoning, or lube remaining in the bore, persists. Then the cheap ammo will settle back into its mediocre accuracy performance after five or ten shots, depending.
That's just something to be aware of when testing ammo in rifles with good accuracy potential like the 541-T.
