.20 barrel

[Ryan]

Would an oem .22 bolt probe work in a .20 barrel? I am thinking of converting my 1322 to 1320. If it did, it would probably give a much better sealing at the breech loading as well. I am keeping eyes open for a .20 barrel. TIA

[breakfastchef]

Would an oem .22 bolt probe work in a .20 barrel? I am thinking of converting my 1322 to 1320. If it did, it would probably give a much better sealing at the breech loading as well. I am keeping eyes open for a .20 barrel. TIA

Roy at Mountain Air Custom Airguns does offer a .20 LW top end for 13xx/22xx guns. He can also supply a .20 cal. bolt.

[droid]

Well I use a .22 bolt in my .20 cal, seems a nice snug fit, in fact feels better in the .20 than the 22.

[Ryan]

Thanks Droid.

Do you see any damage in the o-ring because of the snug fit? I know the .22 and .20 will be close in od, but I didn't want to take the chance of eventually wearing down on the o-ring.

[droid]

No noticeable wear on mine but mine doesn't get overly used.

I suppose even if it does wear it is just a standard o ring. I assume the aftermarket probes will be the same as .22 ones with a smaller o ring.

From what I read there are plenty of people just using the .22 ones.

[ped]

i used a .22 one on my .20 all i had to do was slightly alter the taper behind the oring to fit the leade i'd machined in the barrel
ped

[1377x]

make an adjustable bolt
one was made for me and i use it for .177 and .22 with no leaks