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parts
Last Seen
May 19, 2026
Forster Rimmed and Belted Headspace Gage FIELD length for 300 Mag and all belted Mags BG300MF
Sold byOptics Planet•Posted Apr 27, 2026
Compare prices for Forster Headspace Gauge Field Length Belted Magnums, 300 Winchester Magnum, 7mm Remington Magnum, 338 Winchester Magnum, 458 Winchester Magnum (.535" Base)$45.89
$47.67
You save $1.78 (4% off)
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- Currently in stock.
- Category: parts
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Deal Details
Forster Rimmed and Belted Headspace Gage FIELD length for 300 Mag and all belted Mags BG300MF. "Headspace" is the distance between the face of the breech and the base of the cartridge when the action is closed and excessive headspace can be dangerous as well as impair accuracy. For instance unsupported brass fired in a rifle action with excessive headspace can rupture allowing gas to blow rearward like a rocket exhaust. Because your safety is on the line Forster Headspace Gages are made with pai
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