Starting point for .40 S&W


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Carpedium
December 10, 2012, 09:25 PM
Hello all, this is my first post.

I am writing to inquire about a good starting point for loading a .40 S&W RNBB hard cast lead .401 bullets. These will be going through a carbine rifle with a 16.1" barrel (Kel-Tec sub-2000). My intended purpose is stocking up on bulk ammo for target/tactical training.

Anything that is suggested will be checked thru the appropriate manual and I will start with the minimum load and work up to your suggestion. That said, what recipe works for you?

Any help would be greatly appreciated.

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dsm
December 10, 2012, 09:58 PM
Out of my M&P compact I shoot 180gr MBC lead with 4.5gr of W231 and a CCi small pistol primer. Mild recoil with great accuracy.

Carpedium
December 10, 2012, 11:48 PM
Thank you for your reply. Have you tried this combination in a carbine rifle?

J_McLeod
December 11, 2012, 12:09 AM
Check out post #26 on this thread. http://www.thehighroad.org/showthread.php?t=688365&page=2

I missed that when I worked up some .40 loads and went all the way up to 8.1gr of HS-6 with a 180gr Lead bullet. Fortunately nothing was damaged, I pulled the rest after I couldn't find the first two pieces of brass. My point is, be careful with the data you use.

Carpedium
December 11, 2012, 12:42 AM
Thanks for that heads up. It looks like the barrel on the sub 2k is a true .401, so I will have to keep that in mind as well.

Carpedium
December 11, 2012, 08:25 AM
Thanks for the help so far. Am I barking up the wrong tree trying to develop a load for a carbine? Should I just use pistol data and see where it takes me?

Walkalong
December 11, 2012, 08:28 AM
Data is data. It doesn't care what you shoot it in. A carbine is rated for the same pressure as a pistol. (What different guns can stand is another issue and one is on their own there.)

The safe data giving the highest velocities in a pistol will also give it in the carbine. Think slow for the caliber powders.

Carpedium
December 11, 2012, 10:36 AM
Ok based on that, I am thinking longshot - starting at 6.3 gr with a 1.125" OAL.

Walkalong
December 11, 2012, 12:17 PM
Power Pistol is another one to consider for top velocities.

Check the data to see the top performers velocity wise in .40.

popper
December 11, 2012, 01:04 PM
Why not try the longshot with 135 gr and get rifle fps (1400), still below fps needed for GC.

kludge
December 11, 2012, 01:05 PM
No.7 with lead. See Accurate's site for data.

Carpedium
December 11, 2012, 01:19 PM
I already have 180 gr lead

Carpedium
December 11, 2012, 01:50 PM
Power Pistol is another one to consider for top velocities.

Check the data to see the top performers velocity wise in .40.
7.2 grains based on the data at a shorter OAL. Is power pistol considered to be slower burning or faster than longshot?

AABEN
December 11, 2012, 01:57 PM
I like AA No 5 at 6.5 max load is 7gr Vol 992. All so AA No 9 at 11.0gr 1019 that a max load.

popper
December 11, 2012, 02:23 PM
I already have 180 gr lead - understand, but then you have a 50 yd rifle. The 135 will get you to 100 fine, 2.5" @ 50, vs 2.5 @ 100.

Carpedium
December 11, 2012, 02:43 PM
I already have 180 gr lead - understand, but then you have a 50 yd rifle. The 135 will get you to 100 fine, 2.5" @ 50, vs 2.5 @ 100.
Thank you for the information. My next lead order will be 135 gr for sure.

GLOOB
December 11, 2012, 02:48 PM
Data is data. It doesn't care what you shoot it in. A carbine is rated for the same pressure as a pistol. (What different guns can stand is another issue and one is on their own there.)der.
+1. The sub2000 uses a straight blowback action, if I'm not mistaken. It doesn't matter how strong it is. The brass will fail, first. work it up same as for a pistol and look for bulged brass.

Carpedium
December 11, 2012, 06:47 PM
Thank you for the help everyone. Turns out the local gun shop had a bunch of weird IMC powders, some red dot, and Unique. I got unique because I remember seeing it thrown around. He is ordering me some longshot, so there is that for next time.

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