Post by elkman1310 on Jun 10, 2020 15:55:51 GMT -5
My guns shoot really well with H4895 put I am low on that powder and H4895 especially in 8lb jugs is very hard to find anywhere in the country. I do have plenty of Varget so I am not out of luck put H4895 shoots better than Varget.
There have been posts from guys that shoot Dashers that have used IMR4166 with great results and its avaible so I bought a bottle to try. The burn rate falls right between H4895 and Varget. I did some velocity and pressure tests to see what to load here is how it worked out so far.
IMR4166 and a 105gr VLD an 450P in a Lapua case 32.2grs= 2985fps 32.4gr= 2995fps 32.6gr = 3010fps 32.8grs 3026fps 33.0grs 3055fps No signs of pressure you can see quite a jump in velocity from 32.8 on up to 33.0grs the velocity I want falls right into the 32.4gr range. I tested 5 shots for STD and it was only (4 fps ) STD that's really good. I hope it shoots as good at IK. Sometimes really small STD shoot really big groups at !K there is no good reason why it just happens.
As a comparison H4895 only takes 31.0grs to reach 3,000 fps that's in a 30 inch barrel every barrel is different but that is a pretty good average it takes 33.4grs of Varget to get to 2980fps in the same barrel so it looks like IMR4166 could be a really good powder and its avaible .