357 or 38special 155grn lead, red dot, blue dot or 800x, what will work best?

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I picked up some 38/357 155grn swc GC lead bullets, looking to start a reload for it in either 38 spl or 357 mag as i have empty cases of both, looking through my reloading manual it jumps 150-158grn which seems common, lots of data, i was gonna use a 158 grain load, but not sure what powder to use with my 5" barrel, as i have some red dot, blue dot and 800x on hand, i was leaning towards starting the red dot since its a revolver at 5" and id need the faster burn rate. Ive read that some always use the 110 powder and 2400. Using a small pistol magnum primer, and a recomended starting load of just under 5grn at 4.7 for red dot, in the 357 mag case. What could you guys recommend doing? I weighed a few bullets with lube and gas check, they are about 162.4grn-165-2 in weight
 
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There is no 'best' anything when it comes to reloading. I'd use the 158 grain CAST data too. Three grains won't matter and neither does the barrel length. So pick a powder and work up a load. I'd lean towards whatever powder is given with the accuracy load. If your manual has one. No need for a magnum primer unless you manual says to 'em.
 
Ya the magnum primers are a bit overkill, but its what they had in cci, i was just reading and wondering because some have 357 rifles and others have pistols, so barrel length came into the factor for burn rates to use was all i am mostly wondering about
 
+1 to using 158gr data, mag primers are required but will work just fine. i normally use h110/w296 for full house loads or trailboss, w231/hp38, or tightgroup.
 
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