Look up the comparisons on setting time, viscosity, and tensile strength.... I made the decision for 638 based on those....Bob
Quote from: Firewalker on April 01, 2022, 11:17:12 PMQuote from: JuryRigger on April 01, 2022, 10:56:54 PMQuote from: Firewalker on April 01, 2022, 10:14:23 PMRun a loose dry patch from each end, you will IMEDIATELY know what end the button was pulled from. The trick is knowing if the gun will be more accurate with the pellet facing the burrs or going with the burrs. You never get that option with barrels, they pull the button from breech to crown.Thanks-that might answer why I kept getting lint hung up inside the bore-burrs!...Was pulling the patch through the same way every time-must have been against the burrs.Quote from: sb327 on April 01, 2022, 10:19:14 PMIf you have a large enough window and some feeler gauges, you can get an idea how ‘bent’ it is. Just note, if you have a pretty close tolerance and are using loctite, go FAST! It will set before you get to the other end. That’s the voice of experience talking. Lol. Numrich is hit/miss. They generally just sell overruns, used, or going out of business type stuff (and of course surplus military). Dave So far; getting about .060" over an 18" length... Jesse"Good fer shootin round corners."
Quote from: JuryRigger on April 01, 2022, 10:56:54 PMQuote from: Firewalker on April 01, 2022, 10:14:23 PMRun a loose dry patch from each end, you will IMEDIATELY know what end the button was pulled from. The trick is knowing if the gun will be more accurate with the pellet facing the burrs or going with the burrs. You never get that option with barrels, they pull the button from breech to crown.Thanks-that might answer why I kept getting lint hung up inside the bore-burrs!...Was pulling the patch through the same way every time-must have been against the burrs.Quote from: sb327 on April 01, 2022, 10:19:14 PMIf you have a large enough window and some feeler gauges, you can get an idea how ‘bent’ it is. Just note, if you have a pretty close tolerance and are using loctite, go FAST! It will set before you get to the other end. That’s the voice of experience talking. Lol. Numrich is hit/miss. They generally just sell overruns, used, or going out of business type stuff (and of course surplus military). Dave So far; getting about .060" over an 18" length... Jesse"Good fer shootin round corners."
Quote from: Firewalker on April 01, 2022, 10:14:23 PMRun a loose dry patch from each end, you will IMEDIATELY know what end the button was pulled from. The trick is knowing if the gun will be more accurate with the pellet facing the burrs or going with the burrs. You never get that option with barrels, they pull the button from breech to crown.Thanks-that might answer why I kept getting lint hung up inside the bore-burrs!...Was pulling the patch through the same way every time-must have been against the burrs.Quote from: sb327 on April 01, 2022, 10:19:14 PMIf you have a large enough window and some feeler gauges, you can get an idea how ‘bent’ it is. Just note, if you have a pretty close tolerance and are using loctite, go FAST! It will set before you get to the other end. That’s the voice of experience talking. Lol. Numrich is hit/miss. They generally just sell overruns, used, or going out of business type stuff (and of course surplus military). Dave So far; getting about .060" over an 18" length... Jesse
Run a loose dry patch from each end, you will IMEDIATELY know what end the button was pulled from. The trick is knowing if the gun will be more accurate with the pellet facing the burrs or going with the burrs. You never get that option with barrels, they pull the button from breech to crown.
If you have a large enough window and some feeler gauges, you can get an idea how ‘bent’ it is. Just note, if you have a pretty close tolerance and are using loctite, go FAST! It will set before you get to the other end. That’s the voice of experience talking. Lol. Numrich is hit/miss. They generally just sell overruns, used, or going out of business type stuff (and of course surplus military). Dave