colin lad Posted March 15, 2017 Report Share Posted March 15, 2017 i have been getting good results with my re loads for the 204 but was having an issue with mounting my nv add on as bolt was not able to come back far enough, i have now moved scope back another cm or so but my groups have now opened up about an inch as i have moved scope and so had to change my normal shooting position slightly could this change be cause for my groups opening as it just don't feel as comfy as it used to?? colin Quote Link to comment Share on other sites More sharing options...
Hendrix's rifle Posted March 16, 2017 Report Share Posted March 16, 2017 Do you have a consistent cheek Weld in this new position? If not you may be looking down the scope in a different place each time? My Mtc is quite fussy and if you don't have a good cheek Weld you might as well give up Quote Link to comment Share on other sites More sharing options...
colin lad Posted March 16, 2017 Author Report Share Posted March 16, 2017 It could be that as mine is MTC mamba lite and I can't get cheek weld quite how I like it May have to move it back and build a different nv add on Colin Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted March 16, 2017 Report Share Posted March 16, 2017 You've adjusted your rifle fit as with any gun a well fitting one will make you shoot more accurately as everything is naturally in the correct position. Quote Link to comment Share on other sites More sharing options...
Rim Fire Posted March 16, 2017 Report Share Posted March 16, 2017 Try using high scope mounts to give you clearence for the bolt Quote Link to comment Share on other sites More sharing options...
Redgum Posted March 19, 2017 Report Share Posted March 19, 2017 Can't help with your problem but it does highlight how important how gun/cheek consistency is, we all strive for the load that gives little clover leaf groups but good rifle mount and trigger control is almost more important. Quote Link to comment Share on other sites More sharing options...
turbo33 Posted March 20, 2017 Report Share Posted March 20, 2017 Have a look at this Colin, may be helpful. atb T33 Quote Link to comment Share on other sites More sharing options...
colin lad Posted March 20, 2017 Author Report Share Posted March 20, 2017 Have a look at this Colin, may be helpful. atb T33 interesting that went out today and it is back on the money changed 2 things firstly i have done another batch of reloads and for some reason on checking my diary i made the col 2.260 when it should of been 2.250 so now it is back where it should be also have slightly adjusted my quads and all feels more comfy now whether it was one of them or just having a bad day i don't know but i am back on the money now, also 2 of the bad groups i was getting were covered in that video the vertical string and the split group so i would say it was me on the day more than my equipment many thanks colin Quote Link to comment Share on other sites More sharing options...
turbo33 Posted March 20, 2017 Report Share Posted March 20, 2017 Glad you're sorted now. I found the video interesting and wonder about its contribution to load development. I posted a question a while back about how critical powder weights were, assuming within the min max window. i understand that there must be a perfect burn for the powder to work at its optimum cefficiency. And that different barrels will vary on manufacturing processes. Therefore different bullet makes will perform differently in each barrel. We see this in air rifles that don't have the confusion of powder added. My point us, are we really sure .2 of a grain is the difference between a shotgun pattern or a cloverleaf. It just maybe we are the most inconsistent part of the process and getting bogged down with coal, charges etc. Just a thought! Quote Link to comment Share on other sites More sharing options...
colin lad Posted March 20, 2017 Author Report Share Posted March 20, 2017 Glad you're sorted now. I found the video interesting and wonder about its contribution to load development. I posted a question a while back about how critical powder weights were, assuming within the min max window. i understand that there must be a perfect burn for the powder to work at its optimum cefficiency. And that different barrels will vary on manufacturing processes. Therefore different bullet makes will perform differently in each barrel. We see this in air rifles that don't have the confusion of powder added. My point us, are we really sure .2 of a grain is the difference between a shotgun pattern or a cloverleaf. It just maybe we are the most inconsistent part of the process and getting bogged down with coal, charges etc. Just a thought! on my .222 i find so long as i stay in the min and max and col is there about's i find it's hard to load a bad round but my 204 seem's to be a little more fussy, when it first got it i tried 6-7 different weight's of powder and couldn't get much under 1"moa then on the last weight being the max weight they suddenly clover leafed colin though the other day i feel it was probably more me than the loading Quote Link to comment Share on other sites More sharing options...
Dougy Posted March 20, 2017 Report Share Posted March 20, 2017 Cheek weld is always an issue on a shot gun, but surly of your scope does not have any parallax issues it makes very little difference on POI. Colin, I think you have found the problem with your OAL. Of course the POI will change if you move the scope further forward or back. Which way and by how much ? Anyone's guess. Quote Link to comment Share on other sites More sharing options...
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