As a change of pace, I think it would be fun to watch how many of the tiny red dots you could take out instead of shooting groups every time.
Just a suggestion.
Just a suggestion.
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As a change of pace, I think it would be fun to watch how many of the tiny red dots you could take out instead of shooting groups every time.
Just a suggestion.
How big are those dots?
Well then that wouldn't be a apples to apples test to all the previous barrels tested....once the review and testing is over then sure. Not hard. Thats why I have elevation high or it takes the dot right off the paper then point of aim is gone
The red dots appears to be .250" and the orange squares appear to be .500" across the flats. I've been studying this carefully and using digital imaging equipment you can break down the individual groups into pixels. This allows conformation of the actual size of the groups. I've purchased a Bartlein barrel/ Rim X action based on these results although the published #'s don't necessarily always represent the accurate group sizes.
I, for one, have trouble with imaging equipment. Half the time I try to take a photo with my smartphone, I end up taking a video. Go figure.I notice no one has used “imaging equipment“ to measure any of the targets I’ve posted recently.
Padom, the work you have done here is incredible! So much so that it has inspired me to build a $4K .22LR based on your test results! These comments are not meant to be dis-respectable. The method of measuring the outside lead smudges to determine group size is flawed. Variables like the paper type can have a huge impact on the result. Below are two photos of the same .22LR bullet hole (S&K Long range) and a Mitutoya caliper with the jaws just outside the lead smudge marks. Note that the first photo show the measurement of .1940" (nearly 3/100" under size) and the second photo is simply a close up of jaws and the bullet hole of the same shot. Note that the paper type is from the National Target Company. I have competed in three position and prone NRA/ CMP and international shooting matches for over three decades and this has been an issue in these shooting disciplines so scoring gauges and scoring plugs are commonly used on close to the line shots.
You are making me jealous! Cant wait to get mine from John!
Medium 28mm with an M24 barrel contour@One1Bravo. What height m10's are those? Trying to figure out what I can get away with. Will be running a very similar setup on my rimx build. Attempting to get all the pieces ordered up. Thanks!
Medium 28mm with an M24 barrel contour
Also what kind of torque is everyone using ?
Any reasons I shouldn’t be able to do it myself with my barrel vice and a wheeler Rem 700 action wrench ?In my profession I use electronic torque wrenches almost on a daily basis. On my RimX with keystone barrel I didn’t use one at all because when I installed the barrel to about 30-40 ft/lb with a wrench it is tight. It will not move anymore if I apply more torque if this makes any sense. The machining on both items is just perfect and snug is snug.....
Reubenski actually told me something similar when I asked the same question before I installed my barrel.
Also have in mind that barrels not threaded by keystone may fit / behave differently when tightened.
Can’t find the Zermatt one in Canada right now ...I do not know about the rem action wrench as I used the Zermatt one. And yes barrel vice and action wrench is all you’ll need.
Curious to know what Padom and Orkan are using for torque with the groups they are shooting.
I run 65 in/lb on guard screws. Can't speak to mdt chassis.What about action screws torque ? Is 65 in/lbs too much for a MDT chassis ?
Seems to be all over the board on this subject.
Proof Research originally said 65-85FT/LB, then later they corrected and said 50-60FT/LB.
Keystone accuracy said manufacturer's specs were 50-70FT/LB.
My action didn't like anything over 50FT/LB as the bolt became hard to close. I think it is a manufacturing tolerance thing maybe?
Curious to know what Padom and Orkan are using for torque with the groups they are shooting.
I can’t say what wrenches you can and cannot use, but in listening to Ray @ Zermatt on the PRM podcast , don’t remove the ejector from the action when torquing barrels. The lug engagement ( or lack there of)forward of the ejection port is not where you want to put your rear entry action wrench.I imagine you need a wrench with a slot for the ejector (for Bighorn actions in general) or you have to remove it
reubenski,I paid $865 for a Shilen barrel and having it chambered and threaded.
20" Heavy Palma, 4 groove ratchet
Also am I a complete retard - seems like the bolt release is extremely hard ?