catboat
02-19-2011, 01:22 PM
I bought a used Lyman 4 hole 38 caliber wadcutter from a fellow board member recently, and have been testing loads with it.
It is the Lyman 358495 flat base wadcutter, 141 grain, button nose. I'm loading it it in 38 special cases for my SW 586. I've shot different loads of Bullseye (2.5-3.5 grains), and seating at different overall lengths. Overall accuracy is running about 1.5-1.75+ inches for 5 shots at 50 feet (rested muzzle, two hand grip). I'm am sizing to .360", which pretty much just lubes the bullet, and may kiss a spot or two on the bullet.
Alloy is wheelweights, with a pinch of tin (maybe 50:1 lead:tin).
In general, higher powder loads were more accurate (3.5 grains better than 2.5, 2.75, and 3.0 of Bullseye).
I loaded 10 rounds of this bullet, seated to leave one large lube groove (not lubed) and the small crimping grooved exposed, @ 3.5 grains/Bullseye. On a whim, after reading a comment about it somewhere, I loaded my last 5 rounds of this bullet UPSIDE down. No charge of seating depth. It left 2 lubed grooves exposed.
Wouldn't you know it. The upside down load wadcutter posted the tightest group so far. It put 5 shots, rested, into a round cluster just under an inch.
Time to load up some more, and retest. Interesting so far.
It is the Lyman 358495 flat base wadcutter, 141 grain, button nose. I'm loading it it in 38 special cases for my SW 586. I've shot different loads of Bullseye (2.5-3.5 grains), and seating at different overall lengths. Overall accuracy is running about 1.5-1.75+ inches for 5 shots at 50 feet (rested muzzle, two hand grip). I'm am sizing to .360", which pretty much just lubes the bullet, and may kiss a spot or two on the bullet.
Alloy is wheelweights, with a pinch of tin (maybe 50:1 lead:tin).
In general, higher powder loads were more accurate (3.5 grains better than 2.5, 2.75, and 3.0 of Bullseye).
I loaded 10 rounds of this bullet, seated to leave one large lube groove (not lubed) and the small crimping grooved exposed, @ 3.5 grains/Bullseye. On a whim, after reading a comment about it somewhere, I loaded my last 5 rounds of this bullet UPSIDE down. No charge of seating depth. It left 2 lubed grooves exposed.
Wouldn't you know it. The upside down load wadcutter posted the tightest group so far. It put 5 shots, rested, into a round cluster just under an inch.
Time to load up some more, and retest. Interesting so far.