I read an article about a custom built rife {.257 stw] shooting a 100 grain J-36 bullet,[powder] was reloader 25.. measurment unkowon, At 4100fps.With 3/8" group @ 100 yards.Bullet drop= +1.89" @ 100 yards +3.15" @ 200 yards +1.78" @ 300 yards dead on @ 350 yards -2.58" @ 400 yards -10.27" @ 500 yards... I am needing help with powder charge for this load..This load @ 4100fps has safe pressures.ANYONE that can help me with powder charge or reloads .257 stw please reply..

Lex Webernick, owner of Rifles, Inc (www.riflesinc.com) probably builds as many of these as anyone....last time I looked had some reloading data on his website. I would think you would need at least a 28" barrel to get the velocity quoted.

assume 92 grains for case capacity, I ran this in quickload, with a 100 gr BT and a THIRTY SIX inch barrel, at a HUGE 65000 PSI.

it's PROJECTED to have hit 3999 with that one..

the closet berger i've got is the 95 grain, which hit 4080.

the BT would be
+1.7" 100
+ 2.4" 200
0 at 300
-2.4 at 350
-5.8 at 400
-16 at 500

and just for giggles, i wanted to campare this with a more mundane round the 300 wsm, with a 168 and a 36" barrel.. it barely makes 3420 FPs WITH A THIRTY SIX inch barrel. it's more like 3140 with a 24" barrel

+2.6 at 100
+3.3 at 200
0 at 300
-3.3 at 350
-7.8 at 400
-20.7 at 500

So, this amazing barn and barrel BURNER, at 4000 fps is an amazing 4.7" higher at 500 than a pretty mundane 300 wsm.

jeffe