[Cazador]

I have the following equipment:

20 inch Bison 1:11 intermediate gas system barrel on a Vltor MUR 1 upper.

I need to load 130 grain bullets to hunt Texas hogs. I fear that 110grain will be too light.

I read that the 130 grain bullt will stablize with the 1:11 twist.

Using 22.9 grains of H4198, can the 130 grain bullet be inserted in the case and the COL be set so they will feed correctly from the magazine? Hornady recommendes the COl for the #2730 130grain SP bullet be set at 2.355 inches.

If you already have the bullets then by all means go for it. I have the Stag 1:11, 20.77 with adjustable gas block. Its sending the Federal pulls out the pipe at 2530 f/s.
using H335. Should be good enough for pigs.

 

[Cazador]

Your powder is to fast. 6 to 7 grains more of H335 will bring your load up to 29 to 30 grains. Page 42 for your Western powders 6.8 loads.

http://www.accuratepowder.com/wp-content/uploads/2010/09/WesternLoadGuide1-2016_Web.pdf

 

[Cazador]

Gunnut1, The case capacity for the 6.8 is very limited. In order to get the most out of the cartridge for any given bullet you must put as much powder in the case as possible. That is one reason people have to load longer than what the book says. The average charge is between 28 and 30 depending on bullet weight and powder being used. Your 22.9 grain charge is not going to cut it, and if you put more you will run into serious problems of over pressure using any 130 grain bullet. H335 will give a safe load of 29 to 30 grains using your 130 grain bullet. You powder, 4198 can be loaded with 28 to 30 grains, but it will need a bullet in the 85 to 90 grain range to do it safely.
I hope it makes sense. It is all about finding the correct powder with the right density and burn rate for the case size and staying under the correct pressure range.
People in this forum have experimented more than the the big guys who make the actual reloading manuals.
Good Luck!