mpom

54730 or benos10. Mark

Ordered a 3 pack, thanks for the heads up!

No doubt the XTR is better, but is it 2X better, since the price is 2X?

I am interested in your comparison of the XTR to the RT-6.

Went w the bikini style as the flip down/up covers were either a distraction or getting the way of charging handle on a previous scope.

Depending on how many rounds the action spring/buffer spring has seen, it might be sagged out, think minimum length is supposed to be 10 1/16" and new one is around 11". If spring is not worn, then most likely your gas post in the barrel is oversized, as manufacturers tend to go with larger than necessary to avoid complaints of malfuntions with weak ammo. The forward ejection is not ideal but not a problem either. Folks like the 3 to 4 o'clock ejection angle as it shows the system is balanced. If its something you really want to achieve, a heavier buffer is the easiest fix. Cheapest solution is to buy extra tungsten weights and substitute them for the steel ones presently in there. If you have a front sight base, forget about an adjustable gas block, think its too much work, but an adjustable gas key is another option. Unless its a competiton carbine, where you are willing to fine tune for more points, being over gased is a plus in the sense that you less likely to have issues with a dirty action. Mark

Rotella T6 5-40. Why? Cause I bought a gallon and the bike takes 3 quarts Mark

Cannot see how it would as the bullet has left the barrel by the time the bolt unlocks from barrel extension. Heavier buffer might slow down that unlocking but how could it impact bullet velocity? Mark

Have not done this but if I wanted to, would take off slide, insert mag and look to see what part of follower is contacting slide lock, mark that spot and remove material till slide stop is no longe lifted by follower. Mark

Surprised at the voids in the lifter. Is the front lip edge smoothly radiused? Looks like a crack/separation at the base of the right vertical side. Could this be contributing to the issue? Mark

Hyptothesis is based on concept that increased friction leads to faster wear compared to lesser friction, all else remaining the same. In the JP FCG trigger pull weight depends only on the trigger return spring and hammer spring, as another poster mentioned, and a heavier trigger pull requires stronger springs, creating more pressure between the contact surfaces of hammer and trigger. More pressure leads to more friction. I suspect difference in wear is only theoretical, as JP uses really hard steel and surfaces are kept well lubed w grease. No change in my trigger pull over thousands of rounds and dry firing cycles. Also not arguing, but curious as to why lighter would "wear" first? Thanks, Mark

How long a fire control system lasts depends to a large degree on choice of steel, heat treatment and lubrication. Pull weight should not have any practical effect on durability. A good quality adjustable system such as JP might lose engagement with long use, so you are right that resetting engagement would give it new life, where as a non adjustable system might need to be replaced if engagement wears away. Would take many thousands of cycles w a quality unit. Mark

How did increasing powder charge lead to same or slightly lower velocity/power factor?

A rivet maybe? Usually very low profile. Downside is can be a bitch to remove, though aluminum is not too bad to drill out. Would not work if there is not enough room to get the rivet tool in good position. Mark

Wow, that is a deal, assuming one likes the ATSR1 reticle. The red dot is fine, just don't care for the open spaces, seems very imprecise at distances greater than 100 yards. Could be wrong as I have no experience with this reticle. Mark

Sorry for the poor reading comprehension, as you mentioned that in the original posting ?

Surprised no one mentioned the Burris RT-6, which was recommended on this site a while back. Based on that recommendation I purchased one and am pleased with it. Check out the reviews, and its back in stock again, after Burris held up distribution due to some issue. Mark

https://warrentactical.com/product/smith-and-wesson-mp-warren-tactical-plain-rear-sight/ Went with a plain black rear and FO Dawson front. Mark

Checked my Pro rear sight, 1/16" is the correct size, so PO probably rounded hex set screw. Yeah, MM's idea of a Torx jammed in good makes sense, but would heat set screw to break down thread locker by touching a soldering iron to it for a minute. Try a T-6 or 6.5. BTW, rear sight is in a bag, as I replaced it with a Warren with cut away corners and U shaped notch. Mark

?

? No barrel contact yet available to support tube if it's deflected more than about 0.1".

FWIW, I ran a thin line of white paint, some of it on on front of rear sight which continued on top of slide, so if rear sight is moved right or left, the line becomes discontinuous, to confirm rear sight movement and give a very rough estimate of how much it moved. Then used depth gauge on digital calipers to get more precise measurement of movement, measuring from side of rear sight to side of slide just below it.

Guess he was not a Mormon, or multiple wives would have been acceptable.

Could be a sharp edge at mouth of chamber or a rough surface inside chamber. With the barrel out you can determine which is the culprit, or could be both. I have a JM930 and smoothed the chamber mouth and chamber but it's up to you. Sending it back to Mossberg might be more money than fixing it yourself. Check the long JM930 thread for more potential issues and solutions related to it. Mark

Curious as to your future comparison between the atibal and the rt6. Thanks in advance. Mark