I've been playing with the RCBS 357-180 SIL in a 357 `94 Marlin 24" Cowboy, and ran into a Cast Bullet Association article citing a CE Harris load using IMR4198:
> ...a C.E. Harris load-- A 357 case full of 4198(17 gr) and a 190gr bullet.
> I shot 5 rounds into about 3". I didn't have any confidence this load would
> shoot particularly well, but I decided to bear down and try before I packed
> up to go home. I put the first of a five shot group exactly at point of aim,
> but at first I couldn't find the second shot on the paper until I saw that it
> had enlarged the first hole. the next three shots resulted in a clover leaf.
> A couple more 5 shot groups had 4 shots in a cloverleaf and a 5th opening
> the group up to less than 1-1/2". I loaded the other rounds 5 shots from
> the magazine but the 4198 loads were single loaded. I think this is the best
> shooting I ever did with a lever gun.
https://www.castbulletassoc.org/forum/thread/357-mag-marlin-rifle/
On whim I went to Quickload to see what a "357 case full of 4198(17 gr)" looked like in a 27.5gr (H2O) Starline case and got this:
QUICKLOAD Anecdotal display only -- NOT for use under any circumstance
OK... I've been using QL for 15 years and know most of its quirks & foibles, but this said such a load was absolutely, positively, YouGottaBeKidding, physically impossible.
So naturally I went down into the basement and put it to the test:
Any ideas . . . ?
> ...a C.E. Harris load-- A 357 case full of 4198(17 gr) and a 190gr bullet.
> I shot 5 rounds into about 3". I didn't have any confidence this load would
> shoot particularly well, but I decided to bear down and try before I packed
> up to go home. I put the first of a five shot group exactly at point of aim,
> but at first I couldn't find the second shot on the paper until I saw that it
> had enlarged the first hole. the next three shots resulted in a clover leaf.
> A couple more 5 shot groups had 4 shots in a cloverleaf and a 5th opening
> the group up to less than 1-1/2". I loaded the other rounds 5 shots from
> the magazine but the 4198 loads were single loaded. I think this is the best
> shooting I ever did with a lever gun.
https://www.castbulletassoc.org/forum/thread/357-mag-marlin-rifle/
On whim I went to Quickload to see what a "357 case full of 4198(17 gr)" looked like in a 27.5gr (H2O) Starline case and got this:
QUICKLOAD Anecdotal display only -- NOT for use under any circumstance
OK... I've been using QL for 15 years and know most of its quirks & foibles, but this said such a load was absolutely, positively, YouGottaBeKidding, physically impossible.
So naturally I went down into the basement and put it to the test:
Any ideas . . . ?