A Patch Question

[napp]

Some of you may have already seen this question on another forum. I'm going to ask it again on this forum in the hopes that someone not on the other forum might have some comments.

In a nutshell, the center of my patches appear to be burning thru when firing my Lyman GPR. The patches are .018" thick pillow ticking. I have done the home brew dry lubing of the patches by soaking the ticking in a 7:1 ratio of water and Ballistol. The patches in the picture are the result of firing a 50gr charge of Triple Seven FFFG behind a .490 ball.

I have had one suggestion that the rifling is cutting the patches; and another that they really are burning due to firing a ball and patch combo that is too loose in the barrel. The patches look burnt to me; but I'm certainly no authority.

Take a look at the pictures. I would appreciate your comments.

 

[VA27]

I use Bore Butter, Vaseline or Crisco for patch lube, never had one burn through. It may be that 777 is too hot for your lube.

I only use black powder in muzzleloaders, as the good Lord intended. That other 'stuff' is an abomination and it's use will cause babies to be born without teeth and might possibly bring on the apocalypse.

 

[Mike OTDP]

Those look burned. I'd try a thicker patch. Maybe saliva lube (just put the patch on your tongue while you load). And use black powder if possible.

 

[StrawHat]

A wad between the powder and the PRB will take care of the burning problem. I have used wads from the nest of the paper wasp but I hear felt wads work also.

 

[BHP FAN]

Bore Butter, and 2f Goex.

 

[Loyalist Dave]

Yep burned through. The wadding will work. Try real BP, and try spit patching. That looks like pillow ticking, and it tends to be plenty thick. I have a friend who uses a slightly undersized ball and chamois from the car-parts store for patching. Works for him. Others use a little corn meal on top of the powder instead of the wad, same as some folks put in light bp loads in cartridges, and make up the volume with the cornmeal.

LD

 

[PapaG]

Both cut and burnt. Debur the muzzle using a brass round headed screw and a little valve grinding compound, up the size of the ball to get a good impression of the rifling all the way around through the patch (I used to take a good sized pc. of patch material, pop a ball into the muzzle with the short starter, then gather the patching by twisting it up like a wrung out rag and pulling it back out). Lube as you like. If you have a nice deburred, crowned muzzle and good patch/ball fit it will work well.