Lawndart over on AR is suppose to do some pressure testing on the 416 Rem. because of all the rumors of high pressure that only supposedly occur in Africa.

Mostly I think it is a non-issue that has grown into urban legend status. I've never had any problems with the 416 Rem in Africa.

I did get some erratic velocity and apparently high pressure rounds from my .375 and .280 Rem using old compressed loads with IMR 4350 (caking of the powder). Using old loads may be more of an issue than high ambient temperatures, but look forward to Lawndarts test data.