Safties that only block the trigger I don't trust for spit.
I agree. Sear blocking safeties have failed time and again. Because people want single stage triggers set to minimum movement and weight, all you have is about a hundredth of an inch of sear holding that firing pin back. Sometimes accidental discharges happen to shock dislodging the sear, sometimes it is due to folks adjusting for too light a trigger pull, sometimes the design is faulty.
The trigger mechanism that came with the Remington M721 through late model M700's was faulty. When you put the safety on, it blocked the sear and locked the bolt handle down. However a number of these rifles had accidental discharges when the safety was taken off.
A grey beard that I shoot with, he recounted a story of two hardware store new M721's that discharged, "through the floor boards", when the owners took the safeties off to unload the rifles.
I never cared for a sear blocking safety, but that is what is on my M700. I have adjusted it, slapped it, dropped it on its butt with the safety on, worked the bolt extra fast, to ensure that it it does not over ride. On my M700, Remington changed the trigger so the bolt is not locked down when the safety is on. That was to reduce the chance of an accidental discharge as you don't have to take the safety off to open the bolt.
My favorite safeties are the M1903, M98 Mauser, M70. These safeties cam the firing pin back, and allow you to remove the bolt with the firing pin held back.
The M1917 safety is good, it at least cams the firing pin back.
My SAKO Finnbear has a sear blocking safety.
Wincheste M52D .22LR, sear blocking safety.
H&R M12 .22LR sear blocking safety.
Anschutz M54 .22LR, the wing safety cams the firing back. Later mechanisms went to a sear blocking safety.
Since small bore is fired single shot, and the rifles generally don't have magazines, safeties are hardly ever used.
Most aftermarket over ride triggers incorporate a sear blocking safety.
I like the Marlin lever through action safety. Older Marlins had a half cock only safety. With the through action safety, if you put it on and happen to drop the hammer, going to half cock, you won't discharge the rifle.
The M1 and M14 have outstanding safeties. When you put the safety on, it actually cams the hammer back and locks the hammer into position. You can bayonet someone then butt stroke them on the way down and you will not have an accidental discharge.
My French Berthier and MAS 36, no safety!
I bet the French had a bunch of accidental discharges
Martini Henry, no Safety!. At least it is a single shot rifle, you are less likely to forget if it was loaded.
The Mosin Nagant safety is absolutely positive as you pull back on the cocking piece and rotate it. This positively holds the firing back. Cumbersome but effective.
I like the Arisaka safety. You push the bolt cap and rotate. It holds the firing pin back and also functions as a gas block for gas that got in the bolt body. It is also easy to take off, just push and rotate with thumb pressure. Too bad no one copied it, but post war, all the rifles were into single stage triggers and sear blocking safeties.
I never had much use for the Lee Enfield safety. Apparently neither did the British military as we both agree the half cock safety is more positive.