Don't be afraid to compress OE.
I run as much as .375(3/8") compression of 2F OE.
If your barrel's ROT is 1:18 or 'faster'. Your bbl will really like the heavy bullets from 470 gn up to about 540.
Just make sure you keep the chamber 'bone' dry.
Gary
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RE: .458 bulging Starline
Thx Lumpy, "bone dry" chamber. Ok
Yes, 1:18 twist, and my primary moulds are 485, 500 and 535.
Well Don, I've gotta try the Slip 2000, developed by a chemist who's an avid shooter, and the reviews have been off the wall. But I'll compare. Thx. Always feel the need to combine orders when payin that haz mat fee for BP anyhoo. Appreciate the wipe recipe.
Dyin here. Feel the need to shoot but couldn't have picked a worse time to get the rifle.