Do .366 gas checks exist?

[tommag]

I thought I wanted to buy a 9.3x62, but ls&b, graff, and midway don't show any .366 gas checks. Does anyone know if someone makes them? NEI has molds for 9.3, but they wouldn't be of much use without gc's. Thanks in advance.

[drinks]

Just get a 9x63mm, aka , .35 Whelen, plenty of support for the .358 bullets.

[LIMPINGJ]

Hornady .375 are what I use with my NEI mold.
Jim

[9.3X62AL]

Same story with the Mountain Molds castings--the shanks are spec'd for the .375 caliber checks. My boolits' gas checks have a cool-looking convex aspect after being seated. :-)

Strangely--now there are about as many factory rifles available in the USA for the 9.3 x 62 as there are for the 35 Whelen. I don't think one caliber is much superior over another--paper ballistics don't matter to critters that can't read anyway. Most Whelen barrels run 1-16" twists, while most 9.3 x 63 barrels have been about 1-13.3" (3 turns in a meter). I've read (but not seen) that more recent CZ rifles in 9.3 x 62 are using 1-9.2" twists (4 turns per meter) to better accomodate 300 grain+ sized bullets. If bullet weight (length, really) is an issue for you, that could make a difference between the two calibers. That might be the biggest difference between the two, for that matter.

All that said, my CZ-550 with the slower 1-13.3 twist just dotes on both the MM 270 grain flatnose castings and on the Nosler Partition 286 grainer. And the Nosler Ballistic Tip 250 grainer, as well. There are some 300-320 grain 9.3mm "boxcars" out there, but between a 250 grain boat tail spitzer at 2600 FPS with .494 ballistic coefficient and a 286 grain Partition spitzer at 2450 FPS with .482 bC, there's a flat enough trajectory and a lot of remaining energy at any sensible range for North American hunting.