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How much FPE in .22 caliber does your gun produce for HEAVY SLUGS ?

Now closer to the OPs original question I also cast the 5.55mm MP mold 

and shooting through another modified Wolverine 303 it's shooting the 

35.3 grain slug at 1040 now thats 84.8 foot pounds and I think the gun has

more to give but not much more , This gun has had extensive work done on 

the valve and the transfer port through the titanium block has been opened up 

it took 3 hours of machining and a couple cutting bits .