The Hornady Lock-N-Load Modified Case, C Series .458 Lott (Hornady part no. C458L) threads onto a Hornady Lock-N-Load O.A.L. Gauge to measure the exact seating depth for .458 Lott in your own chamber. Bullet jump to the rifling is one of the more overlooked variables in accuracy, and getting it right starts with knowing your chamber’s true dimensions rather than a generic spec. This modified case is threaded at the case head and has a .002-inch oversized neck so a bullet slips in smoothly, keeping the O.A.L. Gauge reading accurate for .458 Lott.

Key Specifications

• This modified case is prepared specifically for .458 Lott, matching your own chamber dimensions.
• It threads onto the Lock-N-Load O.A.L. Gauge to measure bullet seating depth and rifling jump.
• The neck is .002-inch oversized so a bullet slips in smoothly for an accurate reading.
• It is part of Hornady’s C Series of modified cases built for the O.A.L. Gauge system.

Frequently Asked Questions

What tool does this modified case work with? The Hornady Lock-N-Load O.A.L. Gauge, used to measure bullet seating depth and rifling jump.

Is this case loaded ammunition for .458 Lott? No. It is a gauge accessory only, not a loaded or fireable cartridge.

Buy the Hornady Lock-N-Load Modified Case, C Series .458 Lott

Ships fast from our Lubbock, Texas gun shop. Find the Hornady Lock-N-Load Modified Case, C Series .458 Lott in Hornady‘s reloading equipment lineup and dial in seating depth on your .458 Lott loads.