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Old 08-05-2006, 04:50 PM   #1
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Pondering a new load for IPSC Limited - 40 Cal

I'm a relatively new IPSC shooter - been doing Limited 10 (45acp) for about a year loading with Rainier 200gr RN, Winchester WST (loading 5.0gr) and Remington primers. Really enjoying it to the point that I've decided to upgrade to a SVI Infinity/Sight Tracker in 40 cal. As I wait for the gun to be built I thought it a good idea to ponder the load I'll be using. Some fellow shooters have recommended Hodgdon (Titewad and titegroup) some have said Vihta Vuori N310 (and 320) and some have said stick with the WST. I've enjoyed this forum and have found the information posted to be pretty good so I thought I'd ask for some insights. What is the relationship of faster burning powder to bullet weight (i.e. looking for lighter recoil). Which powder do you recommend and why? What bullets have you used and why (has anyone used Precison Bullets). What load i.e. weight (gr). Primary goals are accuracy and light recoil. Sure I'd like the load to burn clean but I don't think there is going to be much of a difference between powders on this point. I'd appreciate as much detail/brainfood as possible on your choices. BTW, if anyone owns a Sight Tracker please let me know what OAL you're loading.

Thanks,

Duffy1
 
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Old 08-08-2006, 06:14 PM   #2
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Duffy,
My sight tracker digest everything from 1.13 to 1.20. I havent tried longer than 1.200. My current OAL is 1.165 because my backup gun (another SVI - but not a sight tracker) has a Bar Sto bbl and its loading 1.165 very smooth. So same load for both guns although I notice that the Barsto is faster but not much. I load to 172 PF using VV N320 and 180 gr bullets. Fed SRP and mixed brass. Tight group and 180's are also good.
A fellow shooter on the club I go to has a ST too and he use
N320/ MG180/1.165/PF 173
FS
 
Old 10-30-2006, 10:02 PM   #3
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I shoot a para ordnance 16-40 in IPSC loaded to major, I have been loading .40 in standard barrels for competition a long time, first IDPA to minor, Tightgroup seems about the perfect powder for .40 unless you are loading to minor then groups will open up, but anything over 150pf it works fine, pretty much everything you could ask for in a powder low charge weight, low flash quick burn rate, fairly clean etc, I am sure VV is a fine powder but have never used it and dont see how it could be different enough to justify the expense, plus seems like store never has the right number, any way my criteria for IPSC load, 1 make power factor, 2 minimal perceived recoil, clean enough to get through few hundred rounds without a hiccup, and cost. Alot of people claim heavy bullet light recoil, recoil energy may be less but in my opinion perceived recoil is heavier it may be due to a slow push compared to quick snap I shoot better with quick snap, Staying subsonic also has an effect on perceived recoil especially indoors, faster powders use less creating less footlbs of recoil and less muzzle blast, footlb difference is small but there I think burnrate has more to do with it than actual weight, so weather I am loading minor or major the softest and quickest shooting load for me is to use the lightest bullet that will make power factor will staying subsonic granted that turns into basically saying a heavy bullet 170 gr for major 135 for minor but 135's aint to common and usually cause case volume problems with fast powders, everyone makes 155's so thats what I end up with, I used to live near a bullet casting plant so 155's and 180's were it as they were half the price picing up than mail ordering anything, so I would be using 180's if I still lived there but I dont so I mail order, and use Precision bullets because of the flat rate shipping they offer on 3000 bullets about cheapest delivered price out there last time I shopped, personally I havent found any difference in any ones lead, Penn, Lasercast, DJ, Meister. The only copper coated bullets I will use is berry's Rainer's and West coast are or were junk with inconsitent diameters causing crimp problems alot of people use them now so maybe QC has improved, dont care burned two or three times, If I had nothing on hand and only wanted IPSC major loads I would use precision 172gr (not sure if they are sold as 170's or 175's but they weigh 172) and tight group loaded to 170 pf seems like that is 4.2gs but dont quote me on it as that might be the charge weight I use with there 155's, If I wanted IDPA and IPSC major I would use WST as it'll make major easily with 170's and minor with 155's wile holding group size it is dirtier than tightgroup,
 
Old 10-30-2006, 10:08 PM   #4
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PS your other question OAL is only relevant for one bullet as profiles change, for instance Winchester 9mm 124 fmj's will chamber in my Nowlin barrel out to 1.200 while precision round nose need to be loaded to 1.110 to chamber, with the above bullets in a standard (some STI barrels are long throated)Para ord 40 barrel I load to 1.150 just cause I like round numbers I think up to 1.180 will chamber, but I havent had any problems with 1.110 factory hollow points, for some reason double stack designs dont seem to have the problems with shorter than .45ACP rounds that plague single stack 1911.
 
Old 12-24-2006, 04:53 AM   #5
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Duffy

What load did you decide to use and how has it worked out? I have been experimenting with .40 S&W loads trying to find a soft shooting major load that I like. Accuracy is a must, for me. Just a quirk form PPC days, but I can't seem to shake it.

Anyway, I am interested in what you have learned.

Thanks, Buddy
 
Old 12-24-2006, 04:00 PM   #6
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just built a single stack .40. used an Ed Brown drop in match grade barrel, it is shorter chambered than the factory para ordnance barrel so the 170 gr precision bullets needed to be shortened to 1.130 to chamber. Was able to drop my powder charge from 4.2 to 3.9 grs of Tightgroup with the shorter OAL and better barrel to stil make major at 50 degrees. and it was very accurate.
 
Old 12-24-2006, 04:27 PM   #7
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Why the single stack? Limited 10? Just for grins?

I have 3 1911 frames just hanging out in my shop waiting for me to do something with them. Most of the other parts are there, too. I haven't bought the slides and barrels, although I do have 4 or 5 .45 ACP tubes that are not assigned and a couple of .45 slides. Hmm, a Limited 10 forty...different. Is there an advantage?

Thanks, Buddy
 
Old 12-29-2006, 01:09 PM   #8
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My 6" Sight Tracker is currently

burning VV N350 because I had some left over from feeding the Open gun (which now gets 3N38 in large quantities). When that's gone, I will probably try CLAYS.

NOT Universal or International Clays; STRAIGHT Clays. It seems to be the preferred propellant for the .40 boys in my neck of the USPSA woods.

If you want a versatile, available, inexpensive propellant, I highly recommend Red Dot. I used it for years in .38, .40 and .45.
 
Old 01-31-2007, 09:59 AM   #9
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Because I shoot in Hawaii Limited is Limited 10 as only 10 round mags are legal, I believed the 10 round mags would be a little shorter than they are making it TSA and IDPA legal. It's gonna be real close fitting into the 83/4 X 6" box. Plus I'd done everything I could think of to my Para Ordnance. Not sure if I am picking up any advantage dealing with thinner mags but I am doing my part keeping the economy going, had to buy new mag holders, magazines sights etc.
 
Old 07-06-2007, 10:14 PM   #10
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I have experimented with a few powders in .40, but always come back to WW 231. Meters well, gives consistent readings on the chrono, is relatively clean, and its cheap. I have tried bullet weights from 155 to 200 gr and find the 180s seem to perform the best. My sights get back on target more quickly with these 180s.
 
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