77/22 breech block-where to buy?
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The breech block assembly is actually the bolt face. There is a differance between 22magnum and 22lr. and they have different part numbers. Although the 22 magnum breech block will work 99.9% of the time fireing the 22lr. round, accuracy can suffer.
Ruger will not sell this part.
Ruger will not sell this part.
Yes, I tried Brownells and Numrich Gun Parts Corporation. No luck.
If you take the 22-magnum breechblock out of the receiver and place a 22 magnum round in the face you can see it snaps in-between the extractor claws as sits nice and snug in the face. If you do the same with a 22lr. round it is much more loose and sloppy but the extractor claws do hold it in place, albeit barely.
I'll settle on a used one if someone has one to offer for sale.
The only identifying mark on my 22-magnum breechblock is a letter "M" stamped on the back end that fits into the bolt handle.
I suppose the "M" stands for magnum.
Ruger list it as part # KJ20901T and the 22lr. as KJ20900T.
If you take the 22-magnum breechblock out of the receiver and place a 22 magnum round in the face you can see it snaps in-between the extractor claws as sits nice and snug in the face. If you do the same with a 22lr. round it is much more loose and sloppy but the extractor claws do hold it in place, albeit barely.
I'll settle on a used one if someone has one to offer for sale.
The only identifying mark on my 22-magnum breechblock is a letter "M" stamped on the back end that fits into the bolt handle.
I suppose the "M" stands for magnum.
Ruger list it as part # KJ20901T and the 22lr. as KJ20900T.
dickie:
If you don't mind having a single-shot, simply buy a .17 Green Mountain barrel or Ruger barrel and install it. I have one and it is the most accurate .17 I own. The only thing you have to concern yourself with is that it won't eject an UNFIRED round unless you take out the magazine, open the bolt as far as possible, and pop the round out with your fingers from underneath.
If you want to keep it as a repeater, there is a bit more to it. There is a thread on it here on RFC if you'll do a search.
If you don't mind having a single-shot, simply buy a .17 Green Mountain barrel or Ruger barrel and install it. I have one and it is the most accurate .17 I own. The only thing you have to concern yourself with is that it won't eject an UNFIRED round unless you take out the magazine, open the bolt as far as possible, and pop the round out with your fingers from underneath.
If you want to keep it as a repeater, there is a bit more to it. There is a thread on it here on RFC if you'll do a search.
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I just measured the bolt face on a LR Bolt and on a Magnum Bolt. The opening on both is .285. The difference in the two bolts is the length of the groove on the bottom. The magnum bolt looks larger, due to it being closer to the lens. Otherwise they are the same.
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The depth and width are the same. The bolts show 2 grooves. Notice the difference between the lower groove on each of them. The groove on the magnum bolt does not go all the way to the face of the other half of the 2 piece bolt. The half with the locking lugs.
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