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Old 04-13-2017, 04:20 PM
kevh481 kevh481 is offline
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Ideal 357 Magnum bullet weight for 640-1 Ideal 357 Magnum bullet weight for 640-1 Ideal 357 Magnum bullet weight for 640-1 Ideal 357 Magnum bullet weight for 640-1 Ideal 357 Magnum bullet weight for 640-1  
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Default Ideal 357 Magnum bullet weight for 640-1

What is the ideal bullet weight for the fixed sights that come on a 640-1 in 357 Magnum?
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Old 04-13-2017, 04:39 PM
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Default Heavier....

I think it's pretty well accepted that the sights are geared for 158 gr bullets. Right now I have 135 gr Speer Short Barrels in my .38s. I haven't really determined which shoots best in my mod 36 and mod 38 but I'm sure that I'm not going any lighter.
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Old 04-13-2017, 04:51 PM
johnalletto johnalletto is offline
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Default Best weight for J frame snubs

I have Gold Dot 135 Gr plus p but also want to use a 158 gr which I think is a better weight round. I have Hornady XTP 158 GR standard pressure but don't use them because they have shown in tests that they will not expand at the lower velocity. In a .357 I think Federal Premium 158 Grain Hydrashok has demonstrated excellent performance in ballistic gel tests. I was impressed and when I can find them, I'll use them in my .357 pistols and if I can find a 158 GR plus p in a .38 that will expand I will use them also.
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Old 04-13-2017, 07:42 PM
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Hopefully, next week I'll be able to go to the range and try out some Speer Short Barrel .357's. They are 135 grain like the SB .38's. If all goes well, I hope to make them my carry round.
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Old 04-23-2017, 01:07 AM
kaaskop49 kaaskop49 is offline
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I recently shot my Model 60, steel frame like your 640, with 110gr .357 loads and the Perfecta .357 158gr jacketed solid point ammo. Both handled well, double taps (with practice) are possible. I shoot pie plates at 3-7 yards: all rounds are on target.

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Old 04-23-2017, 02:09 AM
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Default

Shot my M 640-1 for the first time a few days ago.
38 Sp +P were OK. On target at 7 yds. My reloads of
158 gr PB KSWC with 8 gr of Herco were OK but did
cause the bullets on unfired rounds to stick out and
lock the revolver up. Don't know if I can crimp them tighter.
Factory 357 Magnum rounds are to say the least a hand full!
All hit the target at 7 yds but second shots with the 357 rounds
were hard to bring back on target in any short time.
Think I'll stick to +P rounds in this revolver....
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