The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 505 Gibbs Load DataGo | New | Find | Notify | Tools | Reply | |
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Does anyone have some data using IMR4350 with 525 Woodie SP for 505 Gibbs? Thanks Bob DRSS DSC SCI NRA & ISRA | ||
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One of Us |
Bob: I don't have any data for the 525 grain Woodleigh but I have a Barnes Manual that has data for the TSX and Banded Solid if you need it. They do not show any loads with IMR 4350. They use much slower powders. Dave DRSS Chapuis 9.3X74 Chapuis "Jungle" .375 FL Krieghoff 500/.416 NE Krieghoff 500 NE "Git as close as y can laddie an then git ten yards closer" "If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition). | |||
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Thanks Dave....I have that data, from loaddata.com. But no info on IMR4350. I realize the quicker burn rate of 4350, but looking for a little more velocity above using RL22. Bob DRSS DSC SCI NRA & ISRA | |||
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Bob: Email Geoff at Woodleigh for data. He has always been quick with answers. RCG | |||
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I use AR2209 (H4350) in my 505 Gibbs. I get around 2300fps with 132gn and around 2500fps with 142gn using the 525gn Woodleigh RNSN. At 2500fps they expand very quickly. They still hold together and retain a high proportion of weight, but that is way over their 2200fps rated impact velocity, so you would want to slow it down for big dangerous game so you get better penetration, but on smaller game they are devastating. IMR4350 is similar in burning rate, so if you tried 137gn or less you should be fine and work up from there. If you want 2200fps then you need a slower powder, because I don't recommend using less than 130gn of powder in that big case. I have not tried anything else with the 525gn bullet, but AR2213SC (H4831SC) works well with the 600gn bullet. | |||
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. Thanks, I'm looking for around 2300 so your data is helpful. Bob DRSS DSC SCI NRA & ISRA | |||
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I am shooting 135 Gr. H4831SC with 525 Gr. TSX and Solid getting 2350 FPS. | |||
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I am using 132 grains of RL22, F215M primer and 525 grain TSX for almost spot on 2300 fps in my rifle. Excellent accuracy. Mike | |||
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My experience with RL22 yielded only 2200 fps working up to a 135 gr charge, again in my rifle (an AHR CZ piece). Though I haven't tried the Barnes bullets in this rifle, I have observed in other rifles that it takes less powder to hit a velocity compared to a lead core bullet construction. Bob DRSS DSC SCI NRA & ISRA | |||
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Bobgrow: If you are interested I have a good bit of load data on RL 25 and MRP2. Superb accuracy at 2250-2300. MMP | |||
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Just finished some initial tests at the range. I was targeting 2300 fps with the 525 Woodies.... IMR 4350 at 132gr produced 2320 with 20 fps extreme spread, with nice groups near 1.25 at 100 yds. Case expansion was just shy of .002". Just what I was looking for. Thanks Bob DRSS DSC SCI NRA & ISRA | |||
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Bob, that looks like IMR4350 is not much different than H4350. I doubt that you got 0.002" case expansion though. In my experience that level of case head expansion is an overload. However, it is quite difficult to measure accurately. If you have rounded primers and easy case extraction (which is what I would expect with that load), then I am sure you have a safe load. If you choose to use the 600gn Woodleigh PPSN, then my load is 130gn AR2209 (H4350) for 2270fps. I am confident you would get similar results with IMR4350. Happy hunting. | |||
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It is difficult even with a mic to get accurate expansion data, that's why I noted something less than .002....it was,though, measurably larger than the cases from the RL22 firings,which yielded .001-.0015,using my measurement technique. But as you suggested,extraction was normal and the primers still had roundness to their edges. I think I have a good performing load for the 525 Woodies at the velocity I wanted. Thanks Bob DRSS DSC SCI NRA & ISRA | |||
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141 of rl22 with barnes tsx or flat nose banded, 150 with same both accurate 150 gr loads are real stiff on recoil but not max. I don't know how fast but very accurate in my rifle. JD DRSS 9.3X74 tika 512 9.3X74 SXS Merkel 140 in 470 Nitro | |||
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I am sure it will be a good performing load. And given that my 142gn load with AR2209 and the 525gn Woodleigh is not max either then it will definitely be safe. The other thing I thought of is that if you are using new cases then you will get more expanion on the first firing than you would normally expect. I always do my load testing in cases that have been fired and resized at least once, because you get unreliable case expansion measurements with new brass. | |||
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2 thou? never shoot that load again!! that 4 TIMES the expansion you should see... .0005 is the max! opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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If it were true expansion I would agree. Normally I draw the line at about 0.0003" case head expansion averaged over 6 measurements. However, based on my loads, that load would be highly unlikely to cause enough pressure to be a problem. I believe it is more likely to be measurement inccuracy. It is quite difficult to get accurate measurements on non belted cases unless you have a micrometer that measures in tenths of a thou, and has a pointed anvil set. | |||
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Yes, they were fresh cases and my mic has a flat anvil....I plan on repeating the load test with neck and full length sized brass and remeasuring.....again, no extraction resistance and roundness yet on the primer edge. Thanks Bob DRSS DSC SCI NRA & ISRA | |||
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Fresh cases! There is your answer. With that load you will most likely find the expansion less than 0.0001" if you can measure that accurately (which is really difficult to do). So test them again once you have reloaded a few. | |||
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i know that load SHOULD not give .002 expansion .. but the stated is dangerous, which could be something like a very small bore or something opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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You are right, 0.002" expansion is a dangerous level of overload, but it would be accompanied by extractor groove marks due to Brass extrusion, very flat, even cratered primers and stiff extraction. Bobgrow did not mention any of those "symptoms". Of course to be safe he should check all those aspect just in case there is a problem with the barrel, or something. | |||
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As I noted earlier, no difficult extraction,no truly flattened primers....remaining rounded edge visible with the unaided eye. Plus, no cratered primer-firing pin indent...no extraction scrapes on the groove of the brass, no residual brass marks on the bolt face. Tight bore...I doubt it. Max chamber reaming...possible. I plan to start a little lower in charge when I redo the load tests on resized brass. Thanks Bob DRSS DSC SCI NRA & ISRA | |||
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She'll be sweet. Have fun with it mate. | |||
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