05-19-2011, 08:48 PM
stanc,
I don't see a need to test the 6.5x55 Swede specifically, as long as we can get .260 Rem or 6.5x47 Lapua to duplicate the velocity with 140gr bullets we're interested in. I think those Swede's are somewhere in the neighborhood of 2600fps, so that is easily attainable since I get 2850fps with 130 VLD's right now from a 22" .260 AR10. 6.5BR would also be another one to look at. If it's easier to use a readily-available 6.5 Swede rifle with readily-available 140gr Swedish Mauser ammo, that could be helpful. I have several friends that own those rifles in Finland, as well as 7.62 NATO rifles and machineguns there, so we could possibly conduct those tests this summer and winter.
Otherwise, I need to try some of the 140gr military-compatible bullets that are available in my .260, and I'm having a hard time finding them. I'm neck-deep in a lot of other work right now, so any suggestions in the right direction would be great. I just checked Midway, but couldn't find any 140gr 6.5mm FMJ's. I wonder if we could locate a source for just the 140gr Swedish military projectiles, separate from the loaded cartridges.
Basically, I'm thinking of testing the 140's versus the M80 ball at 500m, 600m, and 700m on some common mediums. Then we could work backwards in bullet weights with 6.5's if the 140's prove superior to the 147gr 7.62 NATO, which may seem like a foregone conclusion, but should be done on an unbiased assumption, since results are what matters.
I want to combine thin metallic barriers simulating light-armored vehicle skin, with some type of semi-fluid medium behind them to demonstrate both armor-defeat capabilities and follow-on affects to tissue simulant. I think we'll be able to incorporate these tests into one of the various sniper training events there, or my shoot schedule here.
LRRPF52
I don't see a need to test the 6.5x55 Swede specifically, as long as we can get .260 Rem or 6.5x47 Lapua to duplicate the velocity with 140gr bullets we're interested in. I think those Swede's are somewhere in the neighborhood of 2600fps, so that is easily attainable since I get 2850fps with 130 VLD's right now from a 22" .260 AR10. 6.5BR would also be another one to look at. If it's easier to use a readily-available 6.5 Swede rifle with readily-available 140gr Swedish Mauser ammo, that could be helpful. I have several friends that own those rifles in Finland, as well as 7.62 NATO rifles and machineguns there, so we could possibly conduct those tests this summer and winter.
Otherwise, I need to try some of the 140gr military-compatible bullets that are available in my .260, and I'm having a hard time finding them. I'm neck-deep in a lot of other work right now, so any suggestions in the right direction would be great. I just checked Midway, but couldn't find any 140gr 6.5mm FMJ's. I wonder if we could locate a source for just the 140gr Swedish military projectiles, separate from the loaded cartridges.
Basically, I'm thinking of testing the 140's versus the M80 ball at 500m, 600m, and 700m on some common mediums. Then we could work backwards in bullet weights with 6.5's if the 140's prove superior to the 147gr 7.62 NATO, which may seem like a foregone conclusion, but should be done on an unbiased assumption, since results are what matters.
I want to combine thin metallic barriers simulating light-armored vehicle skin, with some type of semi-fluid medium behind them to demonstrate both armor-defeat capabilities and follow-on affects to tissue simulant. I think we'll be able to incorporate these tests into one of the various sniper training events there, or my shoot schedule here.
LRRPF52