I used Crisco on the patches for my first California deer hunt. Crisco patches and 100 degree weather are not compatible. field dressing a buck, and fighting fire at the same time, are no fun. Venison tallow, and bear oil, heated until the venison tallow just melts is great for filling grease hole. or going in tallow boxes. The tallow gives the grease a really high flash point. I get the tallow from par-boiling venison ribs.
Hungry Horse