Austin.243 Posted August 27, 2016 Report Share Posted August 27, 2016 Hi, I've recently watched Richard Utting's video on youtube where he replaces the bolt shroud with a steel replacement. He says that they make a reasonable amount of difference on bolt "throwing" and with how the bolt is centered in the action. Is this something worth replacing, will it have a positive effect on accuracy? Thanks Austin Link to comment Share on other sites More sharing options...
MrCetrizine Posted August 27, 2016 Report Share Posted August 27, 2016 It will have zero effect. The shroud doesn't contact any operational part. Link to comment Share on other sites More sharing options...
DW58 Posted August 27, 2016 Report Share Posted August 27, 2016 It's certainly worth replacing, mainly because the plastic ones have a habit of breaking. Some metal replacements are better than others, but in my experience (3x T3s between my son and I) the shroud sold by Vert*brae in Norway - usually available on Fleabay - are the best. I'm not aware of the metal shrouds making any great difference to the centering or throw of the bolt, but the Norwegian shrouds certainly work very well on all three of our Tikkas. Link to comment Share on other sites More sharing options...
ejg223 Posted August 27, 2016 Report Share Posted August 27, 2016 Only reason I'd replace the plastic one would be if it is broken or if one fits a three pos. safety. On an US Forum someone mentioned that a metal shroud might be safe if a case ruptures an gases escape out the back. It might be. ? Don't all T3x have metal shrouds? edi Link to comment Share on other sites More sharing options...
Austin.243 Posted August 27, 2016 Author Report Share Posted August 27, 2016 They might have a metal shroud it mine is a tikka t3 not t3x Link to comment Share on other sites More sharing options...
Austin.243 Posted August 27, 2016 Author Report Share Posted August 27, 2016 They might have a metal shroud it mine is a tikka t3 not t3x Link to comment Share on other sites More sharing options...
DW58 Posted August 27, 2016 Report Share Posted August 27, 2016 One of the listed improvements T3 -> T3X is the addition of a metal shroud. Link to comment Share on other sites More sharing options...
Big Al Posted August 27, 2016 Report Share Posted August 27, 2016 Someone brought a metal shrouded T3 into my workshop a week or so ago. Although it looked nice it rattled about badly on the bolt and wasn't as good a fit as the standard plastic one. I fitted a spring into the bottom of the shroud and replaced it, the tension the spring provided made the fit so much better and the rattling stopped immediately. Link to comment Share on other sites More sharing options...
Austin.243 Posted August 27, 2016 Author Report Share Posted August 27, 2016 Big Al, The one which the Richard Utting used came with a spring, which he said stopped it wobbling however he also said it increased the trigger pull. This is why I thought it played some roll, eg increasing lock time, or centering the bolt! Thanks Austin Link to comment Share on other sites More sharing options...
Chris-NZ Posted August 27, 2016 Report Share Posted August 27, 2016 Increasing lock time is detrimental, not an improvement. You only replace a shroud for looks or if the original breaks IMHO. Link to comment Share on other sites More sharing options...
DW58 Posted August 27, 2016 Report Share Posted August 27, 2016 The Australian-made shrouds sold on ebaY are inclined to rattle, whereas the Norwegian ones do not with no need for a spring. The choice is yours - we use Vert*brae shrouds on our T3s with no adverse effects, you don't have to. Link to comment Share on other sites More sharing options...
Big Al Posted August 28, 2016 Report Share Posted August 28, 2016 Big Al, The one which the Richard Utting used came with a spring, which he said stopped it wobbling however he also said it increased the trigger pull. This is why I thought it played some roll, eg increasing lock time, or centering the bolt! Thanks Austin I guess how powerful the spring was would determine any effect it might have, neither myself or the owner of the rifle seemed to notice any difference when we tested it, then again we weren't looking for whether or not it had increased trigger pull weight. Without a spring I wouldn't swap from the plastic one, the sloppy fit was far too annoying. Link to comment Share on other sites More sharing options...
Swarovski1 Posted August 28, 2016 Report Share Posted August 28, 2016 I've owned tikka's for 13 to 14 years.never saw the need to change the bolt shroud Link to comment Share on other sites More sharing options...
Akeld Posted August 28, 2016 Report Share Posted August 28, 2016 I've owned tikka for 13 to 14 years.never saw the need to change the bolt shroud Same here, until mine broke. Replaced with an anodised aluminium one which has a weak spring in the base, can't say I've noticed any difference in bolt operation or trigger weight increase Link to comment Share on other sites More sharing options...
Austin.243 Posted August 28, 2016 Author Report Share Posted August 28, 2016 Thanks guys for the replies, as you all say I'll wait until it breaks... If it does! Thanks Austin Link to comment Share on other sites More sharing options...
MrCetrizine Posted August 28, 2016 Report Share Posted August 28, 2016 They should never break as they aren't a working part, just a cover, there's no pressure on them. Link to comment Share on other sites More sharing options...
Akeld Posted August 28, 2016 Report Share Posted August 28, 2016 They should never break as they aren't a working part, just a cover, there's no pressure on them. You can however drop the bolt Link to comment Share on other sites More sharing options...
MrCetrizine Posted August 28, 2016 Report Share Posted August 28, 2016 You'd have to drop it from a great height to hurt ABS and it would have to hit at a very odd angle to contact the shroud and not the rest of it. Link to comment Share on other sites More sharing options...
ejg223 Posted August 28, 2016 Report Share Posted August 28, 2016 It does not matter what they are made of. Fact is many are cracked. Guess 3/4 that come in our workshop. Pretty sure they are not made of abs. Abs cracks white and is very sensitive to solvents. Edi Link to comment Share on other sites More sharing options...
Akeld Posted August 28, 2016 Report Share Posted August 28, 2016 Don't think mine was ABS, but it is an older model Tikka Link to comment Share on other sites More sharing options...
MrCetrizine Posted August 28, 2016 Report Share Posted August 28, 2016 The one that came on my T3 Sporter is definitely injection moulded ABS. It also seems to have a high elastomer content as it's quite ductile. Link to comment Share on other sites More sharing options...
ejg223 Posted August 30, 2016 Report Share Posted August 30, 2016 Looked at a non broken shroud lying around yesterday. It is certainly not abs but i could not figure out what it could be. Burnt corner smelt a bit like rubber. Maybe they tried different materials over time. Edi Link to comment Share on other sites More sharing options...
ATB Posted September 5, 2016 Report Share Posted September 5, 2016 Replaced the shroud on both my Tikkas with steel ones. Snug fit and no rattling. I don't want plastic in front of my eyes if there is a case rupture and gas passing through the bolt. Link to comment Share on other sites More sharing options...
baldie Posted September 5, 2016 Report Share Posted September 5, 2016 I will no longer fit them. Reason ? Half the ones customers have supplied, from various sources all did the same thing.....had an adverse affect on accuracy . How ? Work it out guys. Link to comment Share on other sites More sharing options...
Chris-NZ Posted September 5, 2016 Report Share Posted September 5, 2016 Only reason I can think of is having a loose mass hanging off the action, producing variable harmonics? Link to comment Share on other sites More sharing options...
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