Gold Dot "Short Barrel" Load


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RatDrall
March 15, 2010, 01:43 PM
Anyone chronograph the Speer 135grain .38+P Gold Dot fired from a 4" barrel?

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jfh
March 15, 2010, 04:42 PM
yes. From a 686-4", five shots averaged 1014 fps. Those were shot in October 2007, and a bigger ES was noted; I haven't transcribed the range notes. FWIW, that average drops nicely under the nominal 1050 fps max velocity Speer recommends for this bullet.

Jim H.

RatDrall
March 15, 2010, 05:41 PM
Thanks for the fast replies guys!

What I'm looking for is a faster .38 special load out of my 4" K-frame. I'm having trouble finding these:

http://www.hipowersandhandguns.com/Corbon%2038%20Special%20Ammo.htm

But I just stumbled upon this 125 grain load from Buffalo Bore:

http://www.buffalobore.com/index.php?l=product_detail&p=109

a. S&W mod 60, 2 inch- 1072 fps (319 ft. lbs.)
b. S&W mod 66, 2.5 inch- 1108 fps (341 ft. lbs.)
c. Ruger SP101, 3 inch- 1180 fps (386 ft. lbs.)
d. S&W Mt. Gun, 4 inch- 1258 fps (439 ft. lbs.)

Which looks like mid range .357 velocities from a 4" barrel! I'm just concerned that the "low velocity expansion" hollow point will explode when it hits something because it's moving too fast. What do you think?

Walkalong
March 15, 2010, 06:41 PM
Deleted

Oro
March 15, 2010, 07:26 PM
I'm just concerned that the "low velocity expansion" hollow point will explode when it hits something because it's moving too fast.

I would not worry about that with a quality Speer Gold Dot with a delta V of only about 125fps vs. a 2.5" gun. It's just not enough difference to cause worry. Out of a Carbine or something, I might wonder about it.

jfh
March 15, 2010, 07:45 PM
Actually, Speer has (or had) the same concern that RatDrall has. The Speer white paper for their "short barrel" GD bullet established a nominal range of 860-1050 fps. Beyond that, the bullet is / was liable to fragment. That was for the original 135-gr. I have a pdf copy of the white paper on that; if you want a copy, e-mail me.

However, IIRC, Speer 'redesigned' their GDHB bullets last year to drop the minimal velocity required--anyone have a link to that info? I think they now claim it will at least start to expand below 800 fps. And, I do not recall if they have tweaked their specs for the different bullet weights....

So, if any one has any links, chime in, please.

Jim H.

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