The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 510 Whisper, sub MOA after 2 secs TOF?Go | New | Find | Notify | Tools | Reply | |
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http://www.sskindustries.com/50cal.htm These guys clain MOA accuracy at 600 yards with a .510 whisper round moving at 1050 FPS. "510 Whisper� 750 Hornady AMAC and 750 grain PPI . . . 1050 FPS. Suppressed under 126 DB. MOA accuracy at 600 yards." I'm raising the BS flag. Thats nearly two seconds in the air and I'm calculating 193 inches of hold over. Are my Calcs correct? Anyone know of this for sure? | ||
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Considering that TOF and Max. Ordinate have nothing to do with group size (assuming consistant wind), what's your point? By never exceeding the speed of sound they never have any Trans-sonic disturbance either. | |||
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I can't see why it's not possible and high probably. States a Mk4 16x scope (140 MOA capable), my calcs show only about 81 MOA needed to get to 600 yards at 1050fps (STP) and a BC of 1.0, TOF ~1.8 seconds. Not much wind drif on that big old bullet, 3.1 MOA for a full value 10 mph wind. | |||
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I shoot at the 550 yard range in Eatonville. Sometimes I bring my Encore in 510 whisper. I have a Leupold M1 with a mil-dot reticle. The verticle portion of the reticle has 22 mil dots on it, and the mount tilts down a bit so I can hold on a dot to cover ranges out to 600 yards. I do not remember what the hold over is, but it is several feet, Hahaha. TOF is about 1.9 seconds, and I can shoot 2 moa at 550 yards using amax bullets. I think I can do better. Have never tested my own can against a noise meter. The bolt guns may do better in the accuracy department. Ranb | |||
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Wow, Excuse my newness. I just can't imagine shooting a round, Putting the gun down, looking through the spotting scope and watching my bullet hit a saucer at 600 yds. I need to get out west again. But they do it with mortars at greater ranges than that I guess. Collins | |||
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JD and I talk every so often and our products compete somewhat (he chambers our .458 SOCOM). Our 500 Phantom is similar to his 510 Whisper, however, we designed ours to fit the AR-10 platform from the start. The barrel for our shop mule BOLT gun (we only built the AR-10 version to date) is almost done. A Lothar Walther 1 in 9.5 twist stainless bull rig. While the AR-10 version can shoot just about 1.0" at 100 yards (just a hair over, see here http://feistyrooster.com/500phantom/500phantomloaddata.html ) we will test the bolt gun out to 500 yards (and beyond). The shooter doing the testing is a benchrest competitor who is working with industry on the development of an extreme long range interdiction system (currently about 2 MOA at 1000 yards). Will report results as soon as we have them. Collins - I would LOVE to test our .458 SOCOM with 400 gr RN Solid and/or 500 gr Tungsten Core (Speer AGS) against your Defenshield. I can probably send you an upper and ammo if you are interested? | |||
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Nope, still no workie | |||
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It is interesting to shoot at a clay pidgeon at 500 yards, re-position the rifle to look through the scope, then see the bullet..........miss.  Tracers are interesting, but I swear the flames thrusting out of the back of the tracer make it hook worse than my golf balls at the driving range. I bought a bunch of API to load up and use on the steel targets at the local 200 yard range. Still working on my shooting with this little monster. Marty, I finally escaped from the PRK for a while, I will send some cast 950 grainers to you after I finish my deck.Ranb | |||
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Ranb, FYI I think I found someone that can put a GC on those 950gr cast bullets. I'll let you know. BMG | ||
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Quote: Arg... I just sold a CAR-A4 that had been "done". A very good shooting gun to be sure. I did just pick up a Vanguard in 300 WSM and I'm using that to load "Down to" 7.62 NATO, 30-06, and 5.56 Nato (SS-109/M-855)with a sabot. Sabots do NOT shoot well out of this gun. I'm having to do a reasonable amount of Armor testing now that the Army and Marines have finally decided to take care of their HUM-V's. I'll post some pictures soon, but the 300WSM is punching bigger holes than the 30-06 cored projectile. How fast is your 458 moving? And where are you? We're planning a media day towards the end of summer in Northern VA and I'd love to have you bring some hardware by to demonstrate. | |||
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I have a Lee sizer and Gater gas checks for my cast 50 cal bullets. I still have to try them in the whisper without the checks to see if they work better than with checks. Ranb | |||
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Quote: There are a number of options here. We can send an upper with ammo if you can secure any standard AR-15 lower to mate with it. Or depending on the locale of the test, we have several of our uppers located in Northern VA, the owners might be able to assist and bring the toys to bear. If all else fails, and depending on the timing of the test, we might be able to attend (our production schedule is extremely full right now with over 100 orders open ...) We have already received word from "anonymous source" that with the 400 gr at 1700 fps, at 50 yds the windshield of the current armored Humvee was defeated. Level IIIa body armor has been defeated (penetrated) as well. The 500 gr AGS-T runs at about 1200 fps. All from standard AR-15 lowers and mags. We can also make a custom tungsten carbide or steel core projectile traveling in excess of 2100 fps ... Our 500 Phantom is about to undergo testing with the 50 cal sabot, estimated velocity with the 163 gr 30 cal AP is around 3200 fps from an AR-10 ..... Email me direct at TeppoJutsu@ev1.net to work out details, should be fun. | |||
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