What's the Theory on the RCBS 38-175-RN?

[Four-Sixty]

I'll try these out in a Handi Rifle loaded over IMR 4227 in Starline 360DW brass. The crimp groove is so high, most of the boolit is below the case mouth. I assume it was designed this way, so my question is why? My guess would be to eliminate more space in the case to get a better case fill.

Any other thoughts?

The bottom round is a 360DW boolit. The top case is a 38 Special case for comparison.https://uploads.tapatalk-cdn.com/20190602/b2b19211dd09e2c2d84da714423d5cfc.jpghttps://uploads.tapatalk-cdn.com/20190602/bb7d3b615e03db9c34f5fb47e6b9e77a.jpg

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[Mr Peabody]

Maybe overall length was a concern

[Bookworm]

It looks to have as much of the body of the boolit in the brass, as would a 38 wadcutter.

Come to that, it looks like a DEWC, but with a gas check and a bulbous nose.

Maybe it was designed for a higher velocity with relatively small powder charges ?

[INTRLOPER]

Smith N-Frame cylinders.

[Outpost75]

Smith N-Frame cylinders.

Correct, short cylinder S&W N-frame .357s Models 27 and 28.

[swheeler]

correct amundo

[Four-Sixty]

Are current N frame Smith's still using the shorter cylinders?

[Outpost75]

Are current N frame Smith's still using the shorter cylinders?

N frame yes. K and L frame no.

[trapper9260]

That is interesting to know.Learn something all the time on here.That is what I like about here.Always learn something new.

[Taterhead]

I have nothing to add to the original question. Only popped in to say that those are some beautiful looking cast boolits!