I have a 358 JDJ which I think is the same thing only yours is made by Coyote guns. This load that I use is for the 358 JDJ and should be reduced when trying it in your gun or confirmed by either the powder manufacturer or the manufacturer of your barrel.
I shoot a 225 grain Nosler Partition with 51.5 grains of AA2520. My velocity is about 2290 fps on a 50 degree mostly sunny day in Northern Minnesota. This is done in an older contender with a 14" hunter barrel. My group was 9/16" of an inch and just today I shot a 3 shot group of .65"!! It is a great and accurate load. SSK say's you can go up to 53 grains with their barrels or their rechambered barrels only. I did not need to go so high to get the same velocity. My OAL was 3.237".
Again this was with a 358 JDJ and should be looked upon like that. Good luck.
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