Marlin Junky
03-09-2009, 02:58 PM
Does the following combination sound like it might produce success?
Ruger Stainless Hawkeye in .358 Winchester
.3575" in the grooves and .350" across the lands
SAECO 356 cast of 50/50 (probably BHN 10 or thereabouts) sized initially to .356" with a .356 Lee PT and wrapped twice with .002" tracing paper. I'm guessing the dried bullet will mike around .363".
Final size after a coat of JPW will be through a Lyman 450 die that produces .3605" boolits. I figure the final product will be approx. .361" or a tad bigger.
Cases fired from this rifle with medium pressure loads have a neck ID of approx. .363".
I'm also considering the use of 100% cotton tracing paper under these conditions because of all the "squishing down" the patched bullet will undergo during its trip from the case mouth to the muzzle. Who knows, maybe the reason I couldn't get this rifle to shoot very well above 2000 fps is due to the difference in diameter between the neck area and the grooves. I've got another Ruger M77 in .350RM with just about the same situation but it has a slightly shorter throat which is the reason I'd like to try the .358 first.
MJ
Ruger Stainless Hawkeye in .358 Winchester
.3575" in the grooves and .350" across the lands
SAECO 356 cast of 50/50 (probably BHN 10 or thereabouts) sized initially to .356" with a .356 Lee PT and wrapped twice with .002" tracing paper. I'm guessing the dried bullet will mike around .363".
Final size after a coat of JPW will be through a Lyman 450 die that produces .3605" boolits. I figure the final product will be approx. .361" or a tad bigger.
Cases fired from this rifle with medium pressure loads have a neck ID of approx. .363".
I'm also considering the use of 100% cotton tracing paper under these conditions because of all the "squishing down" the patched bullet will undergo during its trip from the case mouth to the muzzle. Who knows, maybe the reason I couldn't get this rifle to shoot very well above 2000 fps is due to the difference in diameter between the neck area and the grooves. I've got another Ruger M77 in .350RM with just about the same situation but it has a slightly shorter throat which is the reason I'd like to try the .358 first.
MJ