DaveT Posted February 2, 2022 Report Share Posted February 2, 2022 I have always measured 'neck tension' by comparing a resized case before and after seating a bullet....ie 'neck expansion'. I note that Forster are introducing a multiple pin gauge tool to measure inside neck diameter and being a detail-freak it piqued my interest. However....I wonder about its engineering accuracy. Has anyone used certified accuracy pin gauges to measure neck I/D ? Your views on its utility? Where could I buy individual imperial pins vs sets? Your giews much appreciated. Quote Link to comment Share on other sites More sharing options...
The Gun Pimp Posted February 2, 2022 Report Share Posted February 2, 2022 A tool looking for a job........ Quote Link to comment Share on other sites More sharing options...
Big Al Posted February 2, 2022 Report Share Posted February 2, 2022 40 minutes ago, The Gun Pimp said: A tool looking for a job........ I like that Vince 😂 Measuring neck tension doesn't need to be any more complicated than the first method described although that alone isnt foolproof. Think about the elasticity of your brass, if all dimensions are the same but the elasticity of your brass differs then its grip on the bullet will differ, thats why many people anneal after every firing to try and make the necks as similar as possible in terms of the brass hardness. Messing about with pin gauges is for people with too much time on their hands and money to waste. Quote Link to comment Share on other sites More sharing options...
DaveT Posted February 2, 2022 Author Report Share Posted February 2, 2022 Points taken......and money saved!🤣 Thanks for the inputs gents. Quote Link to comment Share on other sites More sharing options...
Mat Posted February 2, 2022 Report Share Posted February 2, 2022 I've bought a non-certified set off Aliexpress (i.e. from China), it was about £60 for a set of 100 to cover 6.00-6.99mm I've not used it to measure neck expansion, but I have used it to measure doughnutting and reaming it away (though arguably a waste of time, I converted a batch of 308 to 6.5 Creedmoor). If you want to accurately measure a small hole it's a good way to do it, so a useful addition to my workshop(/garage) Quote Link to comment Share on other sites More sharing options...
DaveT Posted February 2, 2022 Author Report Share Posted February 2, 2022 2 hours ago, The Gun Pimp said: A tool looking for a job........ Who... me? 🤣🤣🤣 Quote Link to comment Share on other sites More sharing options...
No i deer Posted February 2, 2022 Report Share Posted February 2, 2022 Just use neck tension mandrels job done 👍 Quote Link to comment Share on other sites More sharing options...
John MH Posted February 2, 2022 Report Share Posted February 2, 2022 I use Ken Porter Precision Products Pin Gauges to adjust neck tension. Quote Link to comment Share on other sites More sharing options...
Popsbengo Posted February 2, 2022 Report Share Posted February 2, 2022 3 minutes ago, John MH said: I use Ken Porter Precision Products Pin Gauges to adjust neck tension. They're very nice gauges. I use 21st Century mandrels, does the same job Quote Link to comment Share on other sites More sharing options...
Ronin Posted February 2, 2022 Report Share Posted February 2, 2022 Also use precision ground mandrels to size the internal bore of the neck after initial FL sizing seems to aid consistency and low ES confirms this in the cartridges I reload using them Quote Link to comment Share on other sites More sharing options...
One on top of two Posted February 2, 2022 Report Share Posted February 2, 2022 I do the above ☝️ same as Ronin Quote Link to comment Share on other sites More sharing options...
terryh Posted February 2, 2022 Report Share Posted February 2, 2022 Have some pin gauges that came with the expander mandrels certainly shows up even the hint of a doughnut and consistency of your processes. Each to their own, I certainly do not think what I do is right or the best, but I’m happy and obtain results I’m looking for. Quote Link to comment Share on other sites More sharing options...
DaveT Posted February 3, 2022 Author Report Share Posted February 3, 2022 I also mandrel the I/D as my final sizing operation. Quote Link to comment Share on other sites More sharing options...
DaveT Posted February 3, 2022 Author Report Share Posted February 3, 2022 14 hours ago, John MH said: I use Ken Porter Precision Products Pin Gauges to adjust neck tension. Thanks John Quote Link to comment Share on other sites More sharing options...
(200x135).jpg.0fd0a94f065c6cb243fdff1b40e0819a.jpg)
.jpg.0972b4e2bdf0b5a4109eb96f2b1b62ad.jpg)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.