Clean Vs Dirty Choke

[TKE921]

How much of a difference does a clean vs dirty choke make on a pattern?

I shot my gun a month ago and got 228 pellets in a 10 in circle at 40 yards ( 11-87  Hevi-13 #7  Indian Creek 665 )
     This was on a clean choke and barrel high 50's temp and some light wind

I can not remember if I cleaned it after that last shot and I had a F$#% up on my first shot today so I either had 1 or 2 shots on the final pattern today.  Low 60's temp and maybe some light wind.  Number of shot today was 197 and the pattern was not as even.

[10gaugemag]

Can you slide your 10" circle around a bit and grab a few more pellets? Just have to clean your tube again and shoot a shot on the clean tube then put up another piece of cardboard and shoot a second shot to compare patterns. If the shot on a clean tube is back up with the original numbers you know your choke prefers to be clean. I would go ahead and shoot 3 or 4 shots though to see if after the first shot you get the same numbers on shots 2,3 and 4, maybe not as high as shot #1 but close enough that you don't have to clean after every shot.

[TKE921]

I moved it 1.5" left and picked up 3 total pellets.  I can't say I have ever shot that choke dirty, looking for a pattern.  It has always been clean and always in the 220's somewhere.

I guess I should say it still did put 36 pellets in the 3" target spot I was aiming at.

[10gaugemag]

Clean it and try again.

[Tracker760]

It matters in my gun. A Lot!!!!

http://oldgobbler.com/Forum/index.php/topic,53160.0.html

[TKE921]

I saw that, right after I posted my thread.  I will be cleaning the gun tomorrow.  It is amazing what a difference can be seen from so few shots.