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Best Load For 38sc For Sti Competitor


Adam B

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I just picked up an full size STI Competitor in 38SC with a 4 port comp and 4 hybrid ports. What would be the best load (i.e.-low pressure but still make major) for this gun? I am using 124gr round nose Rainer bullets with Starline 38SC brass.

Thanks

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boynty77

That is the exact gun I have but I have 3 ports instead of 4. I've been working on some loads for a couple of weeks now. This is what I'm up to and it's just about right on the money.

124 gr Montana Gold bullet .355

1.250 OAL

Starline Brass

Winchester Rifle Primer

Hodgdon HS-7 with 10.55 gr (still tweaking)

roughly 170 PF ... 80-90 degree day

or

124 gr Montana Gold bullet .355

1.250 OAL

Starline Brass

Winchester Rifle Primer

IMR SR 7625 with 7.5 gr (still tweaking)

roughly 168 PF ... 80-90 degree day

I will tweak and shoot both powders at local matches until I can find the cleanest of the two and of course the softest.

I've spent lots of time getting to this point. I also plan on switching to .356 125 gr ZERO hollow point bullets. That will requre me to tweak some more. :(

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ipscron2000

I have been using a military pulled powder that has the same properties as HS-7. You can buy it from www.gibrass.com.

From the website:

WC820(f) This is an unusual lot of WC820 that was rejected for use in .30Carbine

ammunition, due to the too fast burning rate. This is a ball powder

which can be loaded using Hodgdon HS7 data or Win571 data.

This is pulldown ball powder.

$56/8# jug.

If you buy 6 jugs it is shipped Hazmat free. This is also the best palce to buy powder for an AR-15.

Just a thought to help save some money.

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  • 4 weeks later...

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