7-30 Waters Super 14 Powder Recommendations - Graybeard Outdoors
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post #1 of 14 (permalink) Old 02-28-2020, 11:03 AM Thread Starter
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Default 7-30 Waters Super 14 Powder Recommendations

Hi all! I'm brand new to these forums, so please correct me if I'm posting this in the wrong place.

I recently bought a 7-30 Waters "Super 14" barrel for my G1 Contender. I'm a novice when it comes to reloading and I'm trying to select the right powder to use for this cartridge. I'm planning on shooting bullets weighing between 120 and 140 grains, probably Nosler ballistic tips, Sierra Spitzers or Hornady SSTs in this weight range. I have heard that some of the best powders for 7-30 Waters are RL-15, W748 and Varget, among others. However, I have also heard that these slower-burning powders will create excessive fireballs out of short barrels like the super 14.

Are there any faster-burning powders you would recommend, or should I stick with the recommended slower-burning ones? Thanks!
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post #2 of 14 (permalink) Old 02-28-2020, 12:09 PM
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7-30 Waters
130 gr. bullet + 33.0 gr. IMR 4064 = nominal velocity of 2200 FPS
another quick powder that'll cut down on muzzle flash is IMR 3031
A great cartridge that is hard to improve upon.
https://web.archive.org/web/20170830...?CaliberID=294

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post #3 of 14 (permalink) Old 02-28-2020, 12:17 PM
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I use the 120 Grn. Sierra pro hunter with H 4895 for my loads in the 7x30 waters and it has worked very well for me, killed my first deer years ago with that load. But we all have our favorite load others will have theirs but I never was one for barrel burner loads.

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post #4 of 14 (permalink) Old 02-28-2020, 12:56 PM
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RL15 has proven to the be most accurate powder in my experience. I have not tried 4064, but have tried H322 and Varget. I typically use 120 grain bullets. I do not get the published velocities though, always slower.


I was hoping H322 would shoot well since I figured it would reduce muzzle blast, but just didn't get the accuracy I wanted.




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post #5 of 14 (permalink) Old 02-28-2020, 09:50 PM Thread Starter
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Quote:
Originally Posted by gemihur View Post
7-30 Waters
130 gr. bullet + 33.0 gr. IMR 4064 = nominal velocity of 2200 FPS
another quick powder that'll cut down on muzzle flash is IMR 3031
A great cartridge that is hard to improve upon.
https://web.archive.org/web/20170830...?CaliberID=294
Thanks a lot. I had heard of Reloaders Nest, but wasn't able to access it. I didn't think of checking the web archive. This load data will definitely come in handy.

Quote:
Originally Posted by rosewood View Post
RL15 has proven to the be most accurate powder in my experience. I have not tried 4064, but have tried H322 and Varget. I typically use 120 grain bullets. I do not get the published velocities though, always slower.


I was hoping H322 would shoot well since I figured it would reduce muzzle blast, but just didn't get the accuracy I wanted.
I have heard multiple times that RL-15 is a very accurate powder in 7-30 Waters. At this point I'll probably buy a jug to give it a try, along with a faster-burning powder like IMR 3031 as suggested by Gemihur. Thanks.
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post #6 of 14 (permalink) Old 03-09-2020, 07:15 PM Thread Starter
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Thanks again for the advice everyone. I ended up going with H4895 and I just received some Varget in the mail. (Boy is that stuff is hard to find.) I've decided to stick with Hodgdon "extreme" powders for now due to their temp stability, but I'll still probably give RL-15 a try at some point in the future because I've heard so many good things about it.

Unfortunately I had some issues with my first batch of cartridges (probably due to excessive headspace) and I've posted a thread in the reloading section concerning the matter. However, I was very pleased with accuracy of the cartridges I did get to shoot and I didn't have any issues with excessive fireballs using the H4895, though admittedly it was a starting load of powder.
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post #7 of 14 (permalink) Old 03-09-2020, 09:42 PM
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What I would suggest to you is invest a little money and get you some 7x30 brass and I think you will find things work better for you I have resized 32 Winchester to 32-40 also 30-30 to 32-40 but I never got the kind of results that I get when I finally got some real 32-40 brass yes I know we are talking 7x30 waters but just using my experience with what I posted as I never tried to resize 30-30 t0 7x30 waters and yes I have a waters. what you are doing is going from 308 down to 284 and you change the properties of the metal too much when doing that I would think. That was my thinking in reforming brass for the 32-40 and I went with 32 Winchester because the neck was already 321 so all I had to do was reshape the case not streatch the neck as I was doing on the 30-30. The H 4895 powder is a slow burning powder and that is why Hogdons uses it for all their reduced loads it is really great and I use it in most of my rifles.

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post #8 of 14 (permalink) Old 03-10-2020, 07:31 AM
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All I have ever used is 30-30 brass. You lube it well then neck it to 7-30. You get this double shoulder which looks odd. Then you use a low starting load and shoot. It is then fire formed to your chamber (which many shooters do anyway by neck sizing after initial firing). Then, instead of full length sizing, bump the shoulder back just enough to chamber when resizing or use a neck sizer die. I use the Lee 7mm-08 neck sizer on the 7-30, works perfect. Only about .005" difference in OAL of case, so it isn't an issue. Can't recall ever having head space issues with mine.


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post #9 of 14 (permalink) Old 03-10-2020, 10:15 AM
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I still say start with the right round, buy a box of factory 7x30 waters ammo and that will show you if you have a head space problem or not, I have never heard of a head space problem with a contender barrel. stick a round in the chamber then take a steel ruler on edge across the barrel that will tell you if there is a lot of head space. I still say your problem is with the resized brass not the barrel but as always I could be wrong. We all have our opinion and we are trying to help on a problem with a screen and keyboard, any way good luck. At one time I owned 18 contender hand guns and 6 rifles and I never had a problem with any of them going bang when I pulled the trigger, but I never used resized brass only factory brass.

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post #10 of 14 (permalink) Old 03-10-2020, 10:54 AM
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Ok I got out a bunch of 7x30 once fired brass the thickness of the head measures 1.45 and then I got out a box of new 30-30 never fired and measured the thickness of the head it measured 1.38 on my digital caliper. Ok got out my Lee reloading book that gives all the dimensions for any given round the head is the same on both rounds the head space is set off the shoulder and from the center of the shoulder the over length to the outside of the rim should be 1.658 the overall length of the unloaded case should be 2.040 and the overall length of a loaded round should be 2.550 so hope this helps.

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Fourth fighter wing Kimpo Korea 1952 Fourth but first, the mig killers.
533rd material ,air defence Oxnard AFB 1953-1955
Pastor of the CBCG-Fellowship group Tulsa Oklahoma.
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