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300rum loads

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Unread 07-29-2003, 11:11 PM
Junior Member
Join Date: Sep 2002
Location: alberta, canada
Posts: 12
300rum loads

I'm wondering if anyone might know how many grains and what length for retumbo powder and with 180 grain hornady sst? I can't seem to find a load for them?
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Unread 07-30-2003, 02:01 PM
Silver Member
Join Date: Feb 2003
Location: Potter Co. PA
Posts: 135
Re: 300rum loads

retumbo might be a little slow burning for 180gr and seems to work better with heavier heads, but still feasible. as far as fps, i'm doing 3050 with 90.0gr using 220SMK's. if the 180gr is going to fast with retumbo, try H1000 instead. havent shot much 180s with it, but it was giving me nice groups with the 200s. i'm sure the 180s should work as well.

If it were easy, I wouldn't be doing it.
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Unread 07-30-2003, 07:19 PM
Silver Member
Join Date: Sep 2002
Posts: 453
Re: 300rum loads

RL25 outpeforms the H1000 with my 200gr MKs,..to the tune of 250fps.

Try some RL25 as well as Retumbo. I have gotten to 87gr so far,..with no pressure and seated at the lands. Havn't opened the retumbo yet,..but I will extend anything I find this week/next when I do.
You try to get closer to the target,..and I keep trying to get further away.
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Unread 07-30-2003, 11:10 PM
Writers Guild
Join Date: Jul 2001
Posts: 1,459
Re: 300rum loads

Try the Hodgdon website. They have put up a bunch of new loads for Retumbo.

Just remember that the SST's are not designed for impact vel faster then 3000fps. Poor penetration could result.

I use them in my '06 and results last year on my big mulie were very impressive. However, my muzzle vel is only 2700fps. Have not shot anything with my Gibbs yet (muzzle vel 3000fps).

3300fps of muzzle vel at close range could spell trouble. For a LR load where impact vel drop below 2800fps, would be a fantastic bullet.

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Unread 07-31-2003, 01:31 PM
Bronze Member
Join Date: Dec 2001
Location: Montana
Posts: 58
Re: 300rum loads

Retumbo From 86.3 grains to 100.5 grains
Remington 9-1/2M Primer
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