The Speer Grand Slam 7mm 175gr Rifle Bullet (brand part no. 1643) is a .284-inch component bullet built for hunters chasing heavier big game where deep penetration matters most. Speer introduced the Grand Slam line back in the 1970s, and it has remained a favorite among hunters who demand outstanding weight retention from a fused, jacket-and-core design. At 175 grains, this is the heavier option in Speer’s 7mm Grand Slam lineup, using the same tapered, precision-drawn jacket with internal flutes fused through the Hot-Cor process for symmetrical, consistent expansion.

Key Specifications

• Bullet weight is 175 grains, the heavier option for 7mm cartridges pushing larger game.
• Bullet diameter measures .284 inches, the standard 7mm rifle bore diameter.
• The jacket and core are fused through the Hot-Cor process for one-piece weight retention.
• Internal flutes in the tapered jacket drive symmetrical, consistent expansion.
• Sold in boxes of 50 bullets, sized for hunters working up hunting loads.
• Each box has a shipping weight of about 21.8 oz (1.36 lbs).

Frequently Asked Questions

How does 175gr differ from the 160gr Grand Slam? Both share the same fused Hot-Cor construction; the 175gr option carries more weight for deeper penetration on larger game.

What is the Hot-Cor process? Speer fuses the jacket and core together during construction so the two stay bonded through impact for better weight retention.

Is this a loaded cartridge? No, this is a bare component bullet for handloaders supplying their own brass, powder, and primers.

Buy the Speer Grand Slam 7mm 175gr Rifle Bullets

When penetration matters more than anything else, Speer built the Grand Slam’s fused core to keep working after impact instead of shedding weight. Order this 175gr 7mm Grand Slam from our reloading bullets catalog and our Lubbock, Texas gun shop will ship your components directly.