Line45 Weighs Five Calibers Against 9mm, Including 10mm and .357 SIG
A new video from Line45 argues that 9mm's long run as the default defensive round is facing real competition, as more shooters experiment with calibers that trade raw popularity for specific advantages in capacity, penetration, or speed.
Snapshot
Line45 profiles five alternatives to 9mm (30 Super Carry, 5.7x28mm, 10mm, .357 SIG and 22 TCM), describing the capacity, flat trajectory, energy, barrier penetration or light recoil each one offers. The channel's view is that defensive ammunition is becoming more specialized, with each of these rounds trading some of 9mm's popularity for one clear strength.
Key points
- 30 Super Carry: Federal's round pushes a 100-grain HST at roughly 1,250 fps, matching 9mm ballistics while fitting 13+1 into frames that used to hold 10+1, according to Line45.
- 5.7x28mm: Line45 describes a 40-grain bullet at around 2,300 fps out of a 5-inch barrel, staying flat from 25 to 75 yards with notably light recoil.
- 10mm: A 200-grain Underwood XTP load reaches about 1,250 fps and nearly 700 ft-lbs of energy, which Line45 says outperforms many .357 Magnum loads in a higher-capacity semi-auto.
- .357 SIG: The host points to a 125-grain Gold Dot load at roughly 1,400 fps, built around barrier penetration such as auto glass and car doors.
- 22 TCM: A bottleneck round based on a shortened .223 case, firing a 40-grain bullet near 2,000 fps from a Rock Island pistol, with milder recoil than 9mm despite the velocity.
Quick take
In Line45's view, ammunition choice is becoming more specialized as newer loads and guns close old gaps in cost and availability, and each of these five calibers gives up some of 9mm's popularity in exchange for a specific advantage.
Watch the full video: Line45