PDA

View Full Version : .32 caliber gas checks



gunfan
01-26-2012, 09:13 PM
How about a .32 caliber gas check for the .32 H&R Magnum/.327 Fed. Mag.? If you could arrange to have a 1-grain gas check on a soft 134-grain LSWCHP and load it into a .327 Fed. Mag. It would be a perfect hunting load for those that have converted their 6 1/2" barreled Ruger single-Six revolvers to shoot the longer Fed. Mag. cartridge.

You could make a LOT of our shooting partners VERY happy!

Scott

Ben
01-26-2012, 10:04 PM
gunfan

Sorry gunfan, a 32 caliber gas check is for .321 - .323 bullets, it won't work with gas checked bullets in the .327 Mag.

.30 cal. .308 gas check shank size .284
. 32 cal. .323 gas check shank size .301

A .30 cal. gas check fits .30 cal. rifle bullets and the .327 Mag. g/c bullets also ( and 32/20 gas checked design bullets ) . The .327 mag. does not fire a .327" dia. bullet , it fires a .312 " bullet, hence it will take a standard .30 cal. gas check.

Ben

Based on the .32 H&R Magnum, stretched and loaded to a higher pressure of 45,000 psi (note that standard pressure 44 magnum is 36,000psi), the .327 (actual bullet diameter .312 in, or 7.92 mm) achieves velocities up to 1,400 ft/s (430 m/s) with 100-grain (6.5 g) bullets (420 m/s and 6.5 g), and up to 1,300 ft/s (400 m/s) with 115-grain (7.5 g) bullets (390 m/s and 7.5 g), from the 3 1/16" (78 mm) barreled Ruger SP-101 revolver.

gunfan
01-26-2012, 11:45 PM
gunfan

Sorry gunfan, a 32 caliber gas check is for .321 - .323 bullets, it won't work with gas checked bullets in the .327 Mag.

A .30 cal. gas check fits. .30 cal. rifle bullets and the .327 Mag. also ( and 32/20 gas checked design bullets ) . The .327 mag. does not fire a .327" dia. bullet , it fires a .312 " bullet, hence it will take a standard .30 cal. gas check.

Ben

Based on the .32 H&R Magnum, stretched and loaded to a higher pressure of 45,000 psi (note that standard pressure 44 magnum is 36,000psi), the .327 (actual bullet diameter .312 in, or 7.92 mm) achieves velocities up to 1,400 ft/s (430 m/s) with 100-grain (6.5 g) bullets (420 m/s and 6.5 g), and up to 1,300 ft/s (400 m/s) with 115-grain (7.5 g) bullets (390 m/s and 7.5 g), from the 3 1/16" (78 mm) barreled Ruger SP-101 revolver.

I know this, Ben. This is why I was suggesting a gas check bullet for a 134-grain (slightly underweight) LSWCHP bullets, so they can be driven at higher velocities in order to avoid leading the barrel.

Thank you for the information!

I understand that the .30 cal. gas check will yield the desired results (avoiding the dreaded barrel leading.) These would be invaluable for reducing friction in the .32 S&W Long when operation in the +P region, when employing 100% lead bullets. Would you recommend driving 3% tin, 3% antimony and 2% silver for use in the .32 S&W Long and eschewing the gas check, when driving it toward the higher velocities? I'm not seeking expansion by any means, just penetration.


(BTW, I have been shooting for 50+ years, Ben. Daddy was Navy Rifle Team, UDT in WWII and Korea.) Besides, I'm an old sailor, myself.


Scott

Ben
01-26-2012, 11:51 PM
Can you tell me how a 32 cal. gas check intended for a .301" dia gas check shank is going to fit on a .284 " gas check shank of a .30 cal. bullet ?

gunfan
01-27-2012, 12:00 AM
It can't, of course.

(I was being FUNNY, Ben.)

Dark Helmet
01-27-2012, 12:37 AM
Maybe gunfan isn't yet aware! :p
http://castboolits.gunloads.com/showthread.php?t=96453
http://castboolits.gunloads.com/showthread.php?t=113612