scallopdiver Posted December 30, 2007 Report Share Posted December 30, 2007 I have a t3 varmint in .222 topped with a 4200 elite which i have been using on the foxes to great effect. I have been reloading from the start,i reloaded pistol ammo for years,and settled on 20grns of vv 130 behind a 50grn v-max which i was able to keep inside 1" at 100yrds. When i went to get more bullets my dealer said he could only get 55grn v-max so i took them thinking there should not be much difference maybe a slightly different poi. How wrong i was!I made up 3 batchs of 10rds with 19.5,20 and 20.5grns of 130 and topped them with the 55grn v-max and went out this afternoon to see which was best. I could not keep any of the loads under 6" and some were missing the sheet of a4 that the dots were on! The rifle was shot last week and i was vapourising apples at 90yrds with ease,it has not been touched since. Would changing to the 55grn heads make this difference? I used some 55grn speer sp before and while not just as accurate as the 50grn v-max they were fine. Any ideas? Quote Link to comment Share on other sites More sharing options...
henry d Posted December 30, 2007 Report Share Posted December 30, 2007 You can`t just swap heads and use the same powder load, you need a complete new recipe designed for the 55gn head. I may be teaching you to suck eggs here but, you had increased the "payload" by 10% !!!! I`ll try and get my books out and rustle something up for you. Quote Link to comment Share on other sites More sharing options...
henry d Posted December 30, 2007 Report Share Posted December 30, 2007 According to the book, starting load for 55gn, FMJ is 19.3 of N130 up to a max of21.0, since you started with 19.5 I would suspect your twist rate may not be suitable for the 55gn heads Quote Link to comment Share on other sites More sharing options...
scallopdiver Posted December 30, 2007 Author Report Share Posted December 30, 2007 You can`t just swap heads and use the same powder load, you need a complete new recipe designed for the 55gn head. I may be teaching you to suck eggs here but, you had increased the "payload" by 10% !!!! I`ll try and get my books out and rustle something up for you. As i said i am not a rookie at reloading and did check the manuals,19.5grns is the starting load with a col of 2.160. Quote Link to comment Share on other sites More sharing options...
The Sniper Posted December 31, 2007 Report Share Posted December 31, 2007 I'm with Fister. I bet it's down to your barrel twist. Get back to the 50's and save a lot of time and expense !! Quote Link to comment Share on other sites More sharing options...
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.
Note: Your post will require moderator approval before it will be visible.