The cardboard egg cartons used to be the ticket for "soundproofing" a room.
Back to the lube, I just finished day 1 (5 stages) of the Texas SASS BP championship with my usual loads, pistols 125gr TC with no lube over about 19gr of FFFg Goex. Butter-flavor Crisco over the first two rounds, like I've done for 20 years now. Rifle is .357 with same 125gr pill lubed with my mix on a lubrisizer over a little more FFFg than the .38's. I shoot this rifle at the bigger matches because it is short stroked. At locals more often the 44-40 for BP. Anyway, no problems with fouling, as usual. Spray some Ballistol in the bores and cylinders before putting in the car, easy clean at home. The caveats are that it is only a 19" barrel and it is usually fairly humid around here, though not always. This has always worked for me and is super easy (well, since I got the lubrisizer! Pan lubing was a hassle). And I like easy, being as lazy efficient as possible. Now, if I ever got into casting, and it could happen some day, I would most assuredly be casting big-lube bullets. I mean, why not? Though all my rifles are 20" or less, I don't doubt I'll have some longer ones. Need a Henry, after all. I recall years ago when some of these big-lubes were pretty new, Three Legged Dog got one for his .45 '73. He showed a picture of a target that he shot at 50 yards, 50 rounds shot standing off-hand at a fairly rapid pace, and the group was mostly about the size of a volleyball. Tore the middle out. Pretty impressive. I recall he started with SPG but said they used so much of it that it was costing a lot, so he switched to a homemade lube.