G'day;
I have a question about M118LR;
I have data information for both the M118LR and the Mk316 from a couple of different sources but the data isn't consistent and i'm wondering if the US Army and USMC, whilst both using M118 LR, was it varied and loaded for each branch differently?
USMC data says the M40A5 should be around 2600fps for M118LR. Dope offered up by a couple of guys i know hovers between 2575 and 2615 fps
SD/ES sits between 12 and 25 fps according to these sources.
US Army bloke i know though, says that his M24 was 2720fps with the M118LR and an SD of 8 fps and their rifles all hovered around this MV.
They both say the box says M118 LR and not Mk316.
Looking at info on the internet, RL15 loads varied from low 43s to high 44s grains for M118 LR but even in forums people are reporting varied MVs. The manual for the M40A5 states 2670fps which doesn't correspond with anything else and doesn't match dope cards.
Trying to clone the loads, I have a node at 2680 fps with Varget which is damn close to the Manuals MV. I also have a node at 2615 fps with H4895 which is close to the 2600 fps of most info out there.
Mk 316 Mod 0 is 41.75gr according to the spec sheet, but a mate of mine pulled a bullet for me and found 43gr in there?
Ack powder changed for the M118 LR over it's life, but that's a pretty big difference between what USMC states is their MV vs what the Army is using.
Can anyone shed some advice on why there's so much variation in results?
Thanks
Carso
I have a question about M118LR;
I have data information for both the M118LR and the Mk316 from a couple of different sources but the data isn't consistent and i'm wondering if the US Army and USMC, whilst both using M118 LR, was it varied and loaded for each branch differently?
USMC data says the M40A5 should be around 2600fps for M118LR. Dope offered up by a couple of guys i know hovers between 2575 and 2615 fps
SD/ES sits between 12 and 25 fps according to these sources.
US Army bloke i know though, says that his M24 was 2720fps with the M118LR and an SD of 8 fps and their rifles all hovered around this MV.
They both say the box says M118 LR and not Mk316.
Looking at info on the internet, RL15 loads varied from low 43s to high 44s grains for M118 LR but even in forums people are reporting varied MVs. The manual for the M40A5 states 2670fps which doesn't correspond with anything else and doesn't match dope cards.
Trying to clone the loads, I have a node at 2680 fps with Varget which is damn close to the Manuals MV. I also have a node at 2615 fps with H4895 which is close to the 2600 fps of most info out there.
Mk 316 Mod 0 is 41.75gr according to the spec sheet, but a mate of mine pulled a bullet for me and found 43gr in there?
Ack powder changed for the M118 LR over it's life, but that's a pretty big difference between what USMC states is their MV vs what the Army is using.
Can anyone shed some advice on why there's so much variation in results?
Thanks
Carso
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