357 rifle barrel length + or - in velocity--->HELP
I really like the idea of using a 180grn bullet in a 357 rifle but! The standard b-length on the carbine [18.5"] is (from what I read) optimum for velocity considering powder used. I 'deerly' want to get a CB 357 with the Octagon barrel. Here in is the question: if the carbine barrel is optimum for velocity will the longer 357 Cowboy barrel[24"] reduce the velocity using the same load?
44-40 Willy
Member posted 04-04-2003 09:23 PM
I've got one of the Navy Arms Brand W Model 1892 clones with a 24" heavy barrel in 357 Mag. I use slower burning powders in my loads and have hit just over 2100fps with a 145gr Winchester Silvertip. Makes for a nice muzzleflash at night with Mrs Willy's 1894C and it's 18.5" barrel.
Willy
IP: Logged
Member posted 04-04-2003 09:59 PM
44-40 Willy.... if it goes 2100-fps outta your 24" barrel would it go 2200-fps [same load] out of your wife's carbine, 18.5 inch barrel? Implying same load was slower because of the barrel-drag[duration of time bullet is in the barrel] in a longer barrel!!!???
44-40 Willy
Member posted 04-04-2003 09:23 PM
I've got one of the Navy Arms Brand W Model 1892 clones with a 24" heavy barrel in 357 Mag. I use slower burning powders in my loads and have hit just over 2100fps with a 145gr Winchester Silvertip. Makes for a nice muzzleflash at night with Mrs Willy's 1894C and it's 18.5" barrel.
Willy
IP: Logged
Member posted 04-04-2003 09:59 PM
44-40 Willy.... if it goes 2100-fps outta your 24" barrel would it go 2200-fps [same load] out of your wife's carbine, 18.5 inch barrel? Implying same load was slower because of the barrel-drag[duration of time bullet is in the barrel] in a longer barrel!!!???
0
-
Some of the guys here did a chrono test awhile back, it was more oriented towards pistols with average barrels vs. snubby's but it made little difference (something like 50 fps between a 2" and 4.5"). I seriously doubt it would reduce your velocity. If you reload you can customize for your different barrel as Michael implied. If you don't reload then just try it. Some gun ranges will rent out chrono's for you to test it. I'd bet it is pretty much straight up. I shoot .44 mags with an 11 inch pistol and a 18 inch carbine and the specs are very similar using cheap factory ammo. 0 -
Having shot both a 14" contender in 357 (180gr. Speer) and a Mod. 94 trapper with an 18" barrel; I can say unequivocally that the 18" barrel was almost 400fps. faster with the same load.
There's really no loss of velocity if you go to a longer barrel. The only exception would be if you went to a 700" barrel; then you'd notice the effects of drag(friction) acting on the bullet.
The 357 can theoretically travel over 50' inside a barrel and still come out the other end.(125gr. jacketed, 14.2grains of Blue Dot,wsp)
Shooting Times' Layne Simpson did a story coupla years ago on that same question-how long a barrel before the load starts to lose velocity-they used a 38spl., I think, and came up with almost 30 feet.
If you know it all; you must have been listening.WEAR EAR PROTECTION!0 -
I don't know for sure about the .357, but the .44 magnum seems to go faster out of an 16" than a 20" gun. I compared my Trapper to a buddy's standard 20" 94 both in .44 and mine was 100 FPS faster. I really think that a pistol cartridge will peak around 16-18" and after that there will be increased drag and reduced velocity.
&0
Please sign in to leave a comment.
Comments
3 comments