Vicious_CB Posted June 6, 2018 Report Share Posted June 6, 2018 M855A1 in ballistics gel with velocity and pressure LostCosmonaut, Collimatrix, Ramlaen and 1 other 4 Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted June 6, 2018 Author Report Share Posted June 6, 2018 M855 Green Tip for comparison LoooSeR, Ramlaen, Collimatrix and 1 other 4 Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted June 6, 2018 Author Report Share Posted June 6, 2018 Mk262 mod1 Mk262 Different Barrel lengths The old hotness Hornady 5.56 75gr TAP T2 .223 75gr TAP The new hotness Black Hills 5.56 77gr Tipped Matchking Ramlaen 1 Quote Link to comment Share on other sites More sharing options...
Ramlaen Posted June 7, 2018 Report Share Posted June 7, 2018 On a related note, M855A1 still fragments at low velocity (1988 ft/s). Quote Link to comment Share on other sites More sharing options...
Sturgeon Posted June 10, 2018 Report Share Posted June 10, 2018 On 6/6/2018 at 3:16 AM, Vicious_CB said: M855A1 in ballistics gel with velocity and pressure The problem here is that "M855A1" isn't really one unified round. It's very likely, given those results, that the rounds tested were early spirals loaded with 28grs WC846 - a hot load indeed! More recent spirals run a much more sedate load of 26.1 grains SMP-842, an entirely different propellant with a slower burn curve. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted June 10, 2018 Author Report Share Posted June 10, 2018 Its says the Avg powder load is 25.8gr using an unknown powder for the A1(look under "Parameters - Physical on test sheet) so I don't think this is one of the earlier hot rod loads. I didnt know they changed the burn rate since the burn rate is supposed to be optimized for 14.5" barrels, I thought the switch to SMP was because it was a much more temp stable powder. Quote Link to comment Share on other sites More sharing options...
Sturgeon Posted June 10, 2018 Report Share Posted June 10, 2018 35 minutes ago, Vicious_CB said: Its says the Avg powder load is 25.8gr using an unknown powder for the A1(look under "Parameters - Physical on test sheet) so I don't think this is one of the earlier hot rod loads. I didnt know they changed the burn rate since the burn rate is supposed to be optimized for 14.5" barrels, I thought the switch to SMP was because it was a much more temp stable powder. At this point, I'm not sure I can say for sure. Given what I knew a year ago, I would have said SMP was more temperature stable - but since then I've been told it's not as temperature stable. I have no idea. There are enough variations that I don't think I can say anything for sure, right now. I do know the current state of M855A1 is not good, because they are running the machines so fast the ammo isn't anywhere near as consistent as it should be. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted June 10, 2018 Author Report Share Posted June 10, 2018 2 hours ago, Sturgeon said: The problem here is that "M855A1" isn't really one unified round. It's very likely, given those results, that the rounds tested were early spirals loaded with 28grs WC846 - a hot load indeed! More recent spirals run a much more sedate load of 26.1 grains SMP-842, an entirely different propellant with a slower burn curve. I reread your post, isnt WC 846 a 7.62 NATO powder? I guess that would explain alot! Or did you mean WC 844 which is the current green tip propellant? But like you said it probably doesnt matter since its all probably different by now. If they really wanted to push it they would use WCR 845 a double base powder they use to hot rod M995. Quote Link to comment Share on other sites More sharing options...
Sturgeon Posted June 10, 2018 Report Share Posted June 10, 2018 5 minutes ago, Vicious_CB said: I reread your post, isnt WC 846 a 7.62 NATO powder? I guess that would explain alot! Or did you mean WC 844 which is the current green tip propellant? But like you said it probably doesnt matter since its all probably different by now. If they really wanted to push it they would use WCR 845 a double base powder they use to hot rod M995. IIRC it's WC 844, my typos notwithstanding. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted June 13, 2018 Author Report Share Posted June 13, 2018 Im pretty impressed with the new round. Current production issues aside or things like feedramp wear which are overblown by the 6.X mafia, there's no need for a caliber change. I just wish the round isn't so damn expensive. They should have made a cheaper ballistically equivalent training round or something. Quote Link to comment Share on other sites More sharing options...
Ulric Posted July 27, 2018 Report Share Posted July 27, 2018 On 6/12/2018 at 8:43 PM, Vicious_CB said: Im pretty impressed with the new round. Current production issues aside or things like feedramp wear which are overblown by the 6.X mafia, there's no need for a caliber change. I just wish the round isn't so damn expensive. They should have made a cheaper ballistically equivalent training round or something. Yes, but if you do make a cheaper training round, they'll just adopt that one over the more expensive round for general issue Quote Link to comment Share on other sites More sharing options...
Ramlaen Posted July 27, 2018 Report Share Posted July 27, 2018 ~.30 cents is expensive? Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted July 27, 2018 Author Report Share Posted July 27, 2018 Nevermind, the $0.76 was from 2013. the 2018 cost for EPR is $0.36. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted September 15, 2018 Author Report Share Posted September 15, 2018 For all the ammo nerds out there: Mk318 Mod 1 Ramlaen 1 Quote Link to comment Share on other sites More sharing options...
Ramlaen Posted September 15, 2018 Report Share Posted September 15, 2018 Since he appears to feel strongly about it I guess it would be a good point of discussion on whether the USMC was forced to adopt M855A1 against their will. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted September 17, 2018 Author Report Share Posted September 17, 2018 On 9/15/2018 at 11:57 AM, Ramlaen said: Since he appears to feel strongly about it I guess it would be a good point of discussion on whether the USMC was forced to adopt M855A1 against their will. I think congress might have been right in this case. M855A1 seems to outperform Mk318 in every literally category. Quote Link to comment Share on other sites More sharing options...
Sturgeon Posted October 8, 2018 Report Share Posted October 8, 2018 On 9/15/2018 at 2:57 PM, Ramlaen said: Since he appears to feel strongly about it I guess it would be a good point of discussion on whether the USMC was forced to adopt M855A1 against their will. The de-facto answer is "yes" as USMC supply relies on Army logistics. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted October 20, 2018 Author Report Share Posted October 20, 2018 Hornady Critical Failure™ Defense Rifle Ammunition. Im surprised they would even put this video on the internet. Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted April 28, 2019 Author Report Share Posted April 28, 2019 The only decent 4.6x30mm gel testing video Ive seen. I have to say, with a TSX bullet, 4.6mm doesnt look that bad terminally. Collimatrix 1 Quote Link to comment Share on other sites More sharing options...
Vicious_CB Posted August 27, 2020 Author Report Share Posted August 27, 2020 6mm ARC 106 gr TAP (ballistic tip) Firearm: Noveske/Proof Barrel | Barrel: 18" | Twist Rate: 1:7.5 Muzzle Velocity: 2625 fps Energy: 1622 ft/lbs 1 Bare Gel Total Penetration 18” Max Cavity 6” Depth of Max Cavity 5.5” Neck .5” Retained Weight 76.8gr Expanded Diameter .53” Auto Glass Total Penetration 15.5” Max Cavity 4” Depth of Max Cavity 3” Neck 0” Retained Weight 41.2gr Expanded Diameter .35” Steel Total Penetration 17.5”” Max Cavity 5” Depth of Max Cavity 4” Neck 0” Retained Weight 70.4gr Expanded Diameter .40” https://www.hornadyle.com/rifle-ammunition/6mm-arc-106-gr-tap#!/ Quote Link to comment Share on other sites More sharing options...
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