Let me think on this....
-IDPA has normally 18 rounds per string (Nah, that won't get the barrel too hot).
-The most I've shot in an IPSC string was 48 rounds with a lot of movement between targets. (It didn't seem to affect the accuracy of the firearm as much as it did me.)
-Cooling a barrel incorrectly could warp it and create inaccuracy or other problems.
- I've had only one firearm get too hot to shoot when I was messing around with a dueling tree and someone of about equal capability. But the accuracy was still there after 80+ rounds were shot.
So what are you shooting to get the gun so hot that accuracy is affected?
(Now rifles are a different story.)
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)