Hello everyone,
Guess it's time for me to put in my two cents worth.
This experience has nothing to do with muzzle loaders.
So I have a Colt Gold Cup Series 80 that was turned into a "race gun" years ago. Tens of thousands of rounds through her. Finally decided to have a smith go through it-new springs, trigger, extractor, almost everything. So take it to the range with hardball loads. Got a number of stovepipes. Got it home and saw the smith was a miser with lubricant. Cleaned and applied Break Free. Much better but still a few stovepipes. About three in 100 rounds.
One of our Deputies comes over and see's my .45 all torn down. Told him about the stovepipes. Pulls out his Series 70 duty gun, has hardly any bluing left on it. It was very smooth. He told me about hearing about Frog Lube from the AR-15 crowd.
So I figured what have I got to lose. Got the paste and liquid, cleaned mine with alcohol and applied the Frog Lube as directed. I thought the heat gun was BS but did it anyway. Assembled and it also felt much better, but the proof would be at the range. So I get 50 230grn hardballs and 50 200grn SWC's lighter loads.
Get to the range and started out with the hardballs. No stovepipes, wow. Go to the SWC's and the same results. Took the gun home and cleanup was much easier. Applied a second application of Frog Lube. Another 250 rounds through it and no stovepipes.
So for my application it worked great. Now have it on a S&W 9mm and a Kimber Pro II .45.
I don't see where it would benefit a ML because it's a different beast. On my Chambers Late Ketland lock, I still use 3 in 1 and it's quick as ever. My Trap shotguns get Ballistol.
My conclusion (your mileage might vary)is that on modern firearms, where there is split second movement of metal, it's a great friction reducer.
While getting my BSME decades ago I took 2 years of metallurgy at Stanford. Had access to very sophisticated testing equipment. I don't have that access anymore so I can't back this up scientifically. Just my personal observations.
Mike C.
Groveland, CA