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Posted: 10/13/2013 5:13:40 AM EDT
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Customary Disclaimer- The load data below is what I worked up and I am new. Definitely work up your own based on your research.
That said, I made two batches of ammo and attempted to compare them to factory loads in my S&W. All rounds were fired standing with a two handed grip from 5 yards. I realize it would have been a better test to use a rest and likely a longer target distance, but I always shoot two handed, standing and I wanted to get a comparison to what I normally do. I usually shoot 15-20 yards, but as I was unsure of how these would work, I thought it best to be closer. Casings showed no pressure signs, only difference in primer across all three types of loads were the color(gold vs. silver). Primer indent, and shape of indent and primer all the same. Average POI on all seem to be about the same. Gun: S&W 66-2, 357 mag, 4"bbl Loads:
Testing Protocol - Six rounds each:
In the accompanying image, the testing type is in columns, load type is in rows with Factory at top, 3.1g in middle and 3.5g at bottom. I then measured the pattern spread. The odd thing is each load grouping had at least one target missing a round or else it was lost dead into another hole. I kind of doubt that for the Factory, Slow Double Action one. It appears to be missing two. Spread distances: Factory
3.1g 700-x 3.5g 700x [li]Slow Double Action - 1.0" [li]Fast Double Action - 2.2" - not counting that one flyer, it would be 1.2"" From my perspective, it basically looks like all of them are relatively equal given the small data sampling and accounting for shooter variables. with the one standout being fast double action with 3.1g. If I had to pick a winner among the three from these images and measurements, I would say it would be 3.1g 700-x. Especially when you discount the flyers. I consider a single round that reduces the spread by 50% to be a "flyer". There was a difference in felt recoil in the 3.1g but not really in the 3.5. Conclusion- More testing needed  . Next up, 50 rounds of 3.1g, 50 rounds of 3.5g, 25 rounds of 3.9 and possibly 4.2 just for to see if it makes a difference(need to double check multiple load sources on that. It shouldn't go above 1200fps, but as I don't have a chrony, I will want to check load data estimates to be sure). Will likely shoot at my normal distances.
http://i995.photobucket.com/albums/af80/landshark9025/Targets_zps4fdb432d.jpg I would love to hear your thoughts on the process and the test. Oh, and bonus, wife loved these rounds and declared there was no reason for us to ever buy ammo again. Prefers "home grown". #winning! |
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A. You should invest in a chronograph so that you can really get data on your loads. B. you're right, 5 yards is not far enough to say anything meaningful re accuracy. T C. I am not an expert, but I just read recently that revolvers will not show any pressure signs via cases- when she blows, she blows. |
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The only comment I can offer is this: When you are developing a load, you want the shooter variability out of the equation as much as possible. How can you know whether a 'flyer' is a flyer, when you are standing in a two-handed hold? Too much variability. I congratulate you on getting started in the reloading hobby. I'm just getting started myself, and so far, I'm enjoying every aspect of it. I have a basic ProChrono that serves me well. It's not fancy, but it gets the job done. About $120 for the base version like I have.  |
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Quoted: A. You should invest in a chronograph so that you can really get data on your loads. B. you're right, 5 yards is not far enough to say anything meaningful re accuracy. T C. I am not an expert, but I just read recently that revolvers will not show any pressure signs via cases- when she blows, she blows. If you work up a load, get sticky extraction, then stop shooting that load or any with a larger charge, you will not kaboom a revolver. Folks that cherry pick a max load without working up are the ones who normally have problems. A cautious reloader who works up a load correctly, will be fine.
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Quoted: Thanks, Dogsplat. A good chrono is on the list. Any recommendations? Until then, it is likely out to my normal 15-20 yard distances and see how they do. At least in the meantime, I can shoot a lot more for the same money, now. |
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