TR&Z Supreme Line .338 Lapua Magnum — 250 gr Sierra MatchKing® BTHP, 10-Round Box / 20-Box Case
Brand: TR&Z • Line: Supreme • Caliber: .338 Lapua Magnum • Bullet: 250 Grain Sierra MatchKing® BTHP (Boat Tail Hollow Point) • Packaging: 10 rounds per box | 20 boxes per case (200 rounds) • Intended Use: Long-range precision, ELR training, match prep • SKU: PPMK338 • UPC: 8605003821090
Push your long-range rifle with match-grade consistency. TR&Z Supreme Line .338 Lapua Mag 250 gr SMK BTHP pairs the legendary Sierra MatchKing® bullet with premium components to deliver the accuracy, stability, and predictable ballistics serious shooters demand. From 600 to well past 1,000 yards, this load’s high-BC match projectile, clean propellant, and reloadable brass help you print tight groups, gather reliable DOPE, and spot impacts with confidence.
Why Shooters Choose TR&Z Supreme 250 SMK
Proven Match Bullet: The 250-grain Sierra MatchKing® BTHP is renowned for its uniform jacket and meplat, excellent concentricity, and high ballistic coefficient—ideal for long-range/ELR precision.
Consistent Components: Boxer-primed, reloadable brass and carefully metered powder charges support low ES/SD for flatter vertical and fewer unexplained fliers.
Long-Range Confidence: Boat-tail design enhances downrange efficiency and wind resistance, simplifying holds and improving hit probability in changing conditions.
Training & Match Value: 10-round boxes are perfect for disciplined strings; the 20-box (200-round) case keeps your lot number consistent through a season of practice and matches.
Key Features & Specs
Caliber: .338 Lapua Magnum
Bullet: 250 gr Sierra MatchKing® BTHP (match/target)
Case: Brass, Boxer-primed, non-corrosive
Powder: Clean-burning propellant tuned for consistent velocities
Packaging: 10 rounds/box • 20 boxes/case = 200 rounds
Use Case: Long-range precision, ELR training, steel and paper target work
SKU: PPMK338 • UPC: 8605003821090
Twist Rate Guidance: Most .338 Lapua Mag rifles with 1:9" to 1:10" twist stabilize 250-gr SMK bullets very well. Always verify with your rifle.
Real-World Performance Benefits
Sub-MOA Potential: Match-grade bullet construction and uniform brass support tight standard deviations for repeatable vertical at distance.
Better in the Wind: The 250-gr SMK’s high BC resists drift, reducing hold corrections and keeping impacts closer to center on blustery days.
Clear Trace & Spotting: Predictable velocity and stable flight make it easier to see trace, call shots, and make fast corrections in training or matches.
Reloadable Brass Value: Save your cases and tailor handloads to your specific chamber and mission later.
Ideal Use Cases
PRS/NRL-style Long-Range & ELR Practice
Dope Development & Data Collection across seasonal conditions
Precision Training for duty or hunting rifles before switching to purpose-built expanding bullets
Steel Matches & Club Competitions where BTHP match bullets are appropriate
Zeroing & DOPE Tips
100-Yard Zero, Then Stretch: Establish a hard 100-yard zero, then confirm drops at 300, 600, 1,000, and your max range.
Chronograph Your Lot: Record a 10-shot string; use the true muzzle velocity in your ballistic app to refine holds.
Track Environmentals: Log density altitude, wind, and temp—your .338’s DOPE will be remarkably consistent when fed accurate atmospherics.
Note Suppressor/Brake Shifts: Reconfirm zero and POI after changing muzzle devices or adding a suppressor.
Storage & Handling
Store in a cool, dry place; avoid extreme heat/humidity.
Use ammo cans with gaskets and desiccant for long-term storage.
Keep boxes organized by lot number; apply FIFO (first in, first out) for consistency.
SEO Highlights (Copy & Paste)
TR&Z Supreme .338 Lapua Mag 250 gr Sierra MatchKing BTHP
Match-grade long-range ammo with reloadable brass and non-corrosive primers
10-round box / 20-box case (200 rounds) bulk value
Low ES/SD for sub-MOA potential and reliable DOPE at distance
SKU PPMK338 • UPC 8605003821090
Frequently Asked Questions
Q: Is the 250-gr SMK suitable for hunting?
A: MatchKing® BTHP bullets are designed for accuracy and aerodynamics—not controlled expansion. For game, verify local laws and consider bullets designed for terminal performance.
Q: Will this run in semi-auto .338 platforms?
A: Many .338 semi-autos are bespoke—always function-test in your specific rifle and follow manufacturer guidance.
Q: What barrel length works best?
A: Common .338 Lapua barrels are 26–27"; longer tubes generally yield higher velocities. Confirm your DOPE with your barrel length.
Q: Is the brass reloadable?
A: Yes—Boxer-primed brass is widely reloadable. Inspect cases and follow established, safe reloading practices.
Safety & Compliance
Use only in firearms in good mechanical condition and correctly chambered for .338 Lapua Magnum. Follow the four rules of firearm safety and all local laws regarding purchase, transport, and range use.
Take your long-range practice to match-grade territory with TR&Z Supreme Line .338 Lapua Mag 250 gr Sierra MatchKing® BTHP (PPMK338, UPC 8605003821090)—consistent, confident performance from the chronograph to the firing line.
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