Lead Fouling in smoothbore 12 gauge

M1KL83

New Member
Slugs - lead fouling
I'm finding quite a bit of lead fouling in my Beretta 1301 Tac after firing 10-20 Foster style rifled slugs.
I've tried Hoppes and Butchs bore solvents with 10 gauge bore brush and also 12 gauge tornado brush.
As well as Ballistol with 12 gauge boresnake.

Anyone else finding this and/or have a good fix for removing or preventing lead fouling in a timely manner?
Takes forever to remove it all once a decent layer has accumulated from firing 20 or so slugs.

I should mention that I'm not doing any rapid fire. In fact being quite disciplined with at least 3 minutes between shots to allow barrel to cool off some during 50 and 100 yard target shooting.
Of all the brands I've tried, good ol Winchester 1 ounce 1600 feet per second rifled slugs are proving the most accurate to date.

Thanks in advance for any and all suggestions.​
 
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