Does barrel heat affect group size

[brett1868]

To answer the question this time....Yes, barrel temp will affect group size but it's one of a number of factors contributing to blowouts. For a light barreled hunting rifle then set your zero on the first cold bore shot cause that's probably how it'll be most of the time. Ammunition should be kept at a consistent temperature cause it'll move around as temps vary, not a lot @ hunting distances but enough at distance to hurt your score. I took the time to make a timber ammo box for the big gun just to insulate the ammo from the days temp variations and to keep them suspended pointy end down.

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[Gwion]

That's great on electronic when you can fire in a chosen patch of wind but when you're stuck in the medieval period with clunk manuasl targets, your shooting pace is somewhat dictated by who ever is in the butts...

[sungazer]

There is great debate over that amongst some that are against the rapid fire technique and want delays put in electronic targets. Personally I think let the electronic targets be the technique can work for you and against you. There was never a level playing field with manual targets.
Then there are those that question the accuracy of them. I have been at comps with manual targets and some competitors question the marker repeatedly I find that a pain, then sometimes they are right and the marker was making mistakes. So errors are just as present if not more with manual markers.