Caliber | Thread Pitch | “A” (inches) | “B” (inches) |
.17 Cal | 5/40 | 0.129 | 2.000 |
.20 Cal | 5/40 | 0.155 | 2.000 |
.22 RF | 8/32 | 0.179 | 2.265 |
.22 CF | 8/32 | 0.176 | 2.265 |
.243 Cal/6mm | 8/32 | 0.183 | 2.265 |
.25 Cal/6.5mm | 8/32 | 0.206 | 2.465 |
.270 Cal | 8/32 | 0.225 | 2.465 |
.284 Cal/7mm | 8/32 | 0.225 | 2.465 |
.308 Cal/ 7.62mm | 8/32 | 0.245 | 2.645 |
.338 Cal | 8/32 | 0.290 | 2.645 |
.35/9mm | 8/32 | 0.306 | 3.145 |
.375 Cal | 8/32 | 0.328 | 3.145 |
.416 Cal | 8/32 | 0.363 | 3.145 |
.44/.45 Cal | 8/32 | 0.417 | 3.145 |
.50 Cal | 8/32 | 0.460 | 3.145 |
No. You need to get a thread adapter and use a .22 brush on your .20 cal. rod.https://www.midwayusa.com/product/1255110461?pid=148480
Are these .20 caliber pro shot brushes good for the .22 rimfire? They have the 5-40 threads for the .20 rods.
It looks like Pro-Shots .22 rimfire brush has 8-32 threads.
Thank You!No. You need to get a thread adapter and use a .22 brush on your .20 cal. rod.
Gerry
That's pretty small. My 20 year old Pro-Shot .22 rods vary from .2015 to .202. I don't use them in my rimfires anymore. .190 would be better than .202 in a .22 rimfire barrel, but it would be very loose in a standard rod guide.I measured my Tetra coated .22 rod at .190.
https://www.boretech.com/products/bore-guide-bolt-action-rimfireI recently ordered a Pro-shot 20cal rod, with the 5-40/8-32 adapter. It’s a very well made rod. The companies shipping costs are refreshingly reasonable. But cleaning my CZ 457 VPT, even using a bore guide, I can not keep the ejector from scarring up the rod. I completed the task with an old Dewey coated 17cal rod. I will be ordering a Pro-shot 17cal non-coated rod soon.
I also used the lathe to turn down the OD of the thread adapter, and the shank of the jag to clear the ejector. With a bore guide having an ID of .209”, the thread adapter and jag shank would not pass the ejector.
Would be nice if the ejector could be easily removed for cleaning rimfires, especially the CZ!
I too would like to know how they do that. I'm not sure how far the ejector extends up on a 457, but with my 452's and and an Mwerks guide, if I put a .22 insert in the guide, I can clearly see 1/3 of the ejector in the bore channel....there's no way possible to get a .22 rod through there without removing the ejector plate, or ruining your rod. If I use a .20 insert I can still see a portion of the ejector sticking up into the path of the rod. I made my own .17 insert...bore .158 for a pro-shot rod, and there is a clear path to the chamber...no problems.https://www.boretech.com/products/bore-guide-bolt-action-rimfire
These bore guides claim that they will keep the ejector from scratching the rod. Maybe someone here will know, I would like to learn for myself also.
Yes, but I keep 2 rods with guide inserts on both. One with a .20 jag, and one with a .22 brush. You can use a .17 jag with a .22 patch on top of a .17 patch, or whatever combination feels right; and you can still slip the insert off, but with a .22 brush, the thread adaptor won't go through the insert.Gerry,
Do you then place the .158 bore guide on the rod before screwing on the adapter and jag tip? And remove the whole works each time you run a new patch or brush?
Ditto.I like a .187dia rod for rimfires
I have 6 or 8 cleaning rods of various makes, lengths and diameters that I've acquired over the past 10-12 years. IMO the best by far are the Bore Tech Bore Stix. Coated and stiffer than carbon fiber rods of the same diameter, they also have the best ball bearing system. The tips never work loose in use and I've never seen any damage signs in the coating. None. They cost more than most but, as they say, buy once cry once. I like their .20 cal. rod for .22 rimfire. proof-positive-bore-stix-20-calI like a .187dia rod for rimfires
I got one of these bore guides for my new 457 Varmint. It seems to work fine.https://www.boretech.com/products/bore-guide-bolt-action-rimfire
These bore guides claim that they will keep the ejector from scratching the rod. Maybe someone here will know, I would like to learn for myself also.