So as a newbie I bought several types of 150 grain ammunition and found a couple that work well in my new rifle once I'd broken in the barrel but looking at one batch of my current prefered brand (Winchester) the seating of the bullet in the case is 1mm deeper in four out of twenty rounds in a box - I'm guessing this won't help my groups/accuracy but I went for the b option today (federal) because they seem more consistent in terms of manufacturing tolerances (only one seated slightly deeper across two boxes) - how much of an issue is this? I really don't want to home load as I have little time as it is. I assumed I'd need to check between different batches of the same round from the same manufacturer on the range but in-batch variation wouldn't be an issue! Presume I might need to step up to more expensive rounds to get better consistency and and hence performance in terms of accuracy?
thanks in advance for your thoughts