SMK XS78 — CO2 Air Rifle

SMK XS78 Review — The CO2 Classic

The SMK XS78 is a CO2-powered air rifle that has earned a loyal following among UK shooters. The bolt-action design uses a 14-shot rotary magazine, giving you rapid follow-up shots . Available in .177 and .22 calibre, the XS78 is ideal for target shooting, plinking, and light pest control. The 1/2 inch UNF threaded barrel accepts standard silencers. The two-stage adjustable trigger lets you fine-tune the pull weight. The manual safety is positioned for easy thumb operation. The ventilated rubber butt pad reduces felt recoil.

SMK XS78 UK — Technical Specifications

The XS78 features a rifled steel barrel for consistent accuracy . The 14-shot rotary magazine is easy to load and reliable . The CO2 system uses two 12g CO2 cartridges inserted into the buttstock . The rifle delivers approximately 100 shots per fill . The two-stage adjustable trigger is set at approximately 3 lbs out of the box . Overall length is 1100mm, and weight is 3.2kg . The beechwood stock has a raised cheekpiece for comfortable shooting . The 11mm dovetail rail accepts standard scope mounts.

SMK XS78 Magazine — 14-Shot Capacity

The 14-shot rotary magazine is the XS78’s key feature . The magazine sits flush in the action and feeds pellets reliably . You can fire 14 shots before reloading . This is a significant advantage for pest control and target shooting . The magazine is easy to load and remove for cleaning . Spare 14-shot magazines are available separately . We recommend buying extras for extended shooting sessions.

SMK XS78 Problems — Honest Owner Feedback

The XS78 has received constructive owner feedback on UK airgun forums . The CO2 system is the most common issue . Owners report that the seal between the CO2 cartridges can fail, causing gas to leak . Using Pellgun oil on the CO2 cartridge tips helps maintain seal life . The bolt action can be stiff out of the box . This smooths out with use . The trigger is functional but not as refined as more expensive rifles . On the positive side, owners consistently praise the XS78 for its accuracy, shot count, and value for money . One owner called the XS78 “a brilliant budget CO2 rifle” . Another said it was “accurate, reliable, and a pleasure to shoot” .

SMK XS78 Accuracy — What Owners Achieve

The XS78 produces good accuracy with the right pellet choice . Owners recommend H&N Field Target Trophy, JSB Exact, and Air Arms Diabolo Field pellets . One owner reported 1-inch groups at 25 yards with JSB Exact pellets . Another owner achieved consistent results at 30 yards with H&N FTT pellets . The CO2 system provides consistent power, contributing to the rifle’s accuracy . The ventilated rubber butt pad and adjustable trigger improve shooting comfort.

SMK XS78 Upgrade Kit — Improving Performance

The XS78 benefits from an upgrade kit to improve performance . A tuning kit typically includes replacement O-rings, a modified valve, and a hammer spring . This increases power output and consistency . Many owners report significant improvements after fitting a tuning kit . The rifle becomes more efficient and delivers more shots per CO2 fill . Upgrade kits are available from specialist UK tuners . We recommend kits from T R Robb for the XS78.

SMK XS78 For Sale UK — In Stock at Fieldcraft Airguns

Fieldcraft Airguns has the SMK XS78 in stock now in .177 and .22 calibre. The rifle includes a 14-shot magazine and a fill probe. Every SMK XS78 comes with our exclusive 12 month warranty. We recommend adding a pack of 12g CO2 cartridges and a tin of quality pellets to your order — H&N Field Target Trophy or JSB Exact work well . Spare 14-shot magazines are available separately . We recommend buying at least one extra for extended shooting sessions . For owners who want to reduce the report, we recommend a suitable 1/2 inch UNF silencer . For owners who want to upgrade performance, we recommend the T R Robb tuning kit .