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7mm Rem Mag powder suggestions with a 22 5/8" barrel

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02 March 2010, 23:59
Wookie316
7mm Rem Mag powder suggestions with a 22 5/8" barrel
I like RL22 in my 24 1/2" barrel, but in my Sako 22 5/8" barrel it still shoots well, but seems to leave lots of powder residue in the barrel.

Anyone with a short barrel on a 7mm Rem Mag have a pet load with decent speed & accuracy?

Right now I load 68gr RL 22 & a 140gr Nosler BT. In my 24 1/2" I get an average of 3275 FPS with a 3 shot cloverleaf. Barrel stays fairly clean too. This however is a custom 1-9 barrel & not a stock 1-9.5 barrel like my 22 5/8" Sako

The 22 5/8" Sako will cloverleaf the above load too, but at a 3065 FPS average & lots of powder residue.

I am thinking IMR4350, or RL19 which I have some of both may be a better option. My only fear with RL19 is in my experience I have been able to get good accuracy out of it, but have never gotten near the speeds they say in loading manuals Frowner Out of the testing I did in my 24 1/2" 7mm, I was finding a max load barely made 3100 FPS while the manual says 3300 FPS? That's why I switched to RL22, I picked up 200 FPS & maintained the accuracy.

With a 22 5/8" barrel I am afraid RL19 won't go over 3000 FPS with a 140gr Frowner May as well shoot a 30/06 or 270 then Wink

Here are a couple photos of the little gem.






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Did I mention I love Sako's

03 March 2010, 04:38
fredj338
I don't have such a rifle but IMR4831 & H4831 have always given me better accuracy than RL19 in my 280 w/ 23"bbl. I would look there. It's just a bit faster than RL22.


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