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Old October 17, 2011, 06:28 PM   #1
jim8115
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Help with Montana Gold 38 special

I loaded some Montana gold 125 Gr JHP, 1.440, 4.5 Grains W231, light crimp.
I cant get them to group woth anything , 4 inches or so at 25 feet.
Any idea what I could have done wrong?
For reference, same gun ( S&W model 10 4" ) , same day , same distance shooting 158 grain Hornandy SWC/HP , 4.0 Grains w231 , all shots touching for a group of an inch or so.

Jim

Last edited by jim8115; October 17, 2011 at 07:37 PM.
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Old October 17, 2011, 10:47 PM   #2
engineermike
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Do these Montana Gold bullets have a cannelure/crimp ring? After you shoot a round are the others setting back? (Are your bullets the same C.O.L. after you shoot a round?) If not any of these then I would increase my powder charge from 4.5 to 4.6 then up to 4.7 and then to 4.8. I believe Hodgdon has that weight of bullet between 4.3 to 4.9 grains. Of course that is for a Hornady XTP bullet... I have not loaded any 125 grain bullets in this caliber but the second load you cited is what I shoot in a Berry's 158 flat nosed bullet and I too am very satisfied with that one.

Anyway, it could be the powder charge the set back or even the crimp is where I would start looking. But then again I'm sure someone out there is shooting that Montana Gold bullet that has a little more experience.

Good to see you are still loading Jim;

Mike
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Old October 18, 2011, 04:40 AM   #3
WESHOOT2
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Try a bit more crimp.
Try a bit more W231. Not too much.
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Old October 18, 2011, 09:32 AM   #4
jim8115
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Yes, they do have a crimp groove. I checked, and did not see any setback.

JIM
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Old October 18, 2011, 10:19 AM   #5
engineermike
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Looks like Hodgdon shows a C.O.L. of 1.455 for that bullet. (I forgot that in my last post) I would suggest playing with the C.O.L. a little using the 4.5 grains of powder and if that didn't help then adjusting the powder charge up or down a little then if still no luck then adjusting the crimp a little but if the bullets are not setting back and they fit easily into the cylinder then I would think the crimp is ok but then again there is a difference between a rolled crimp and a taper crimp.

Anyway, good luck Jim and don't blow yourself up...

OH YEA! Maybe your gun don't like 125 grain bullets...
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Old October 18, 2011, 10:54 AM   #6
black mamba
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Just another thought: maybe the ogive of that short bullet doesn't mate up well with your seating stem, and you're getting bullet runout. Lay a few of the loaded rounds on the edge of a flat table top with the rims off the edge and roll them, looking for bullet wobble. If the bullet gets started in the barrel crooked, accuracy is gone.
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Old October 18, 2011, 11:19 AM   #7
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Well, know that brings up a good question... Nope that would be a whole new thread.
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