Never heard of one lighter...
Here is case measurements for our 416 HE target case
made from our 585 HE big belted case. Ed
Here is picture of 375 HE left, 416 HE next, 416 HSM right..
Here, tentative specs, 416 HSM case we are doing from bmg brass,
A 375 HE, with Lawton action, bunch being done with those .....
