Yes, Ruger's P89 can take +P ammunition as well as "+P+" ammo. United States of America and Canadian law require that all rifle cartridges used in commercial firearms be approved for +P status. This means that they must pass federal tests which prove that they will function properly with increased pressure from gunpowder.
Ruger introduced its P85 pistol in 1995. It was designed to replace the L86A1 series pistols then being produced. The P85 uses similar design concepts found in other modern Ruger revolvers such as the Single-Six and Blackhawk. However, it uses different materials for some parts of the mechanism so as to reduce weight without reducing strength. For example, the P85 uses stainless steel for its cylinder and barrel instead of aluminum, which reduces weight but increases cost. The P85's overall length is 8 inches (203 mm), width 5 inches (127 mm), and height 5 inches (127 mm). The P85 weighs 26 ounces (766 g) empty. There are two models of the P85: one with a 4" barrel and one with a 6" barrel. Both use the same basic design but have minor differences including frame colors and storage locations for optional laser sights.
The Beretta 92 series can handle +p or +p+, although like with any pistol, it is only suggested in small quantities. The maximum recommended quantity is 5% of a shooter's body weight in.22 Long Rifle +p+ rounds.
This amount is not to be taken as absolute safety, but rather as a margin of protection that should provide sufficient time to take care of business if necessary. A person can survive with less than 5% of their body weight in water for several days, so this means that a 95-pound (41 kg) person could safely shoot 20 pounds (9 kg) of +p+. However many factors come into play when using firearms, including ammunition type and quality, firearm condition, experience of the user, etc., so this is only an estimate.
It is your responsibility to know what type of ammunition you are shooting and to use that kind exclusively. The 92 series cannot reliably function with hollow point or target bullets. It is also important to clean the barrel regularly with a suitable solvent to prevent clogging.
Beretta recommends periodic maintenance of the 92 series pistols by professional gunsmiths. These include cleaning the chamber, bolt, and other internal parts manually or with appropriate equipment to remove any residue from previous use.
That being said, any Glock, HK, Beretta, Highpower, Glock, Walther, Ruger, S&W, or any NATO-certified firearm will handle +P ammunition (no difference). In terms of +P+ loads, moderate quantities should be OK for today's 9mm mainstream pistols and most, but not all, previously built guns. Heavy loads may cause problems for some older models that have less capacity in their magazines.
Some people recommend against using +P ammunition with certain firearms because they claim that the recoil is too much for those guns. But since any gun can be used to shoot +P ammunition, this argument isn't very strong. Stronger reasons are that some people don't want to spend the money on quality ammunition or don't have any other type of ammunition on hand when they need it.
The main reason that most people don't use +P ammunition is because they're afraid that the recoil will blow their pistol out of their hands.
There are many different factors that go into determining how much recoil a particular firearm will produce when shooting a specific cartridge.
Ammo branded "+P" is available from most major manufacturers and can be safely used in any pistol that has been approved by the weapons manufacturer for use with +P ammunition. Most current firearms are eligible. Contact the gunmaker if you have any concerns. The only other requirement is that the pistol must be in good working order.
Since +P changes the character of the bullet, it's important that you use the same brand and type of ammunition in your weapon as what was originally installed. This will ensure maximum performance and reliability from your firearm.
The best option for those looking to protect themselves is to purchase a +P-marked handgun from an authorized dealer. These guns can be purchased new or used and will provide the necessary protection while being easy to shoot.
Those who prefer not to buy new but still want to have +P capability available for their pistol should consider installing a +P conversion kit. These kits are available from many manufacturers and can usually be done by anyone with basic tools. They offer the advantage of getting faster shot cycles than regular ammunition, which may come in handy during high-stress situations.
Finally, for those who want maximum security but don't need quick response times, there are also self-defense+P programs available. Under this program, individuals can purchase special rounds that increase the difficulty of duplicating the round's jacketed hollow point design.