A few years ago, I received, by mistake. a 177 steel breech for a .22 Crosman 1322. I installed it without realizing that it was the wrong caliber. Before Installing the breech, the gun fired pellets at about 430fps. When I added the steel breech, the gun was still shoting at about 430 fps. After a couple of weeks I noticed I was using the wrong breech so I repaced it with the original .22 plastic breech. Last year, just out of curiosity, I installed that .177 breech on a crosman 362 that had the correct .22 steel breech and the rifle kept shooting practically at the same 630ish fps with both breeches. When I used the .177 breech on both .22 cal guns, I did feel a little air coming out of the breech, but the chrony never showed any significative difference. Now that .177 breech is on a crosman 1377
Yes, you're right. As you said, the bolt does change. The diameter of the bolt seal (o ring) is smaller. The funny thing is that even with this smaller .177 seal in a bigger .22 barrel, the muzzle velocity was practically the same as with the other breech with the correct .22 bolt/seal. despite the puff of air coming out from the breech. Cheers!!!@@LowkeyAirgunner
This reminds me to Chrony test the Beeman Chief II with a missing probe o-ring before stopping procrastinating to fix it
Hello all the way from Mexico will you tell me good PCP for hunting morning please
Still holding together pretty good. 🤔👍
Oh yea
Great video, very interesting thanks for sharing. 👍
👍
A few years ago, I received, by mistake. a 177 steel breech for a .22 Crosman 1322. I installed it without realizing that it was the wrong caliber. Before Installing the breech, the gun fired pellets at about 430fps. When I added the steel breech, the gun was still shoting at about 430 fps. After a couple of weeks I noticed I was using the wrong breech so I repaced it with the original .22 plastic breech. Last year, just out of curiosity, I installed that .177 breech on a crosman 362 that had the correct .22 steel breech and the rifle kept shooting practically at the same 630ish fps with both breeches. When I used the .177 breech on both .22 cal guns, I did feel a little air coming out of the breech, but the chrony never showed any significative difference. Now that .177 breech is on a crosman 1377
The breech is the same only the bolt changes
Yes, you're right. As you said, the bolt does change. The diameter of the bolt seal (o ring) is smaller. The funny thing is that even with this smaller .177 seal in a bigger .22 barrel, the muzzle velocity was practically the same as with the other breech with the correct .22 bolt/seal. despite the puff of air coming out from the breech. Cheers!!!@@LowkeyAirgunner
It depends how fast it's losing air😁😉👍, and where its losing air😁
Yep!
i got 2 bulldogs, the 357 had a tendancy to lock up if not used reguarly. But bascially the same gun
That bullpup is very powerful so that doesn't surprise me. It's a lot better than the avenge x for sure.
👍
👍
still very good actually.
You're the engineer so tell us please.
🤔 makes a guy wonder don't it ??