sungazer wrote:Yep I have bought a box to have a test and look see after all this posting. I plan to weigh them now and try them on a few different materials and thickness as well as for accuracy. The results will be interesting to compare.
AZZA'S HJ47 wrote:Well the search for a cheap plinking round will continue probably stick to the Super roo. My T3X Super Varmint will shoot these all day shot a group today that was .6 of a inch with a flyer. I also tested some 60gr vmax shot under a inch also will do some playing around with seating depths so should be able to close the groups up a little. Even the 70gr speer soft points shot well also just under a inch at 100. I did also have some barnes Varmint Grenades to test however left them in my ammo crate at home.
A little diisapointed with the FMJ 62gr pills I personally struggled to get a group any smaller than 2 to 3 inches. Two diffrent powder combos and diffrent charge rates best groups were around the max charge with 8208. I will try a few diffrent things with these projectiles however i am doubtfull i will be able to get a group under the inch mark.
Back to the drawing board me thinks
AZZA'S HJ47 wrote:1 in 8
sungazer wrote:I have loaded up some of these but haven't shot any yet. I plan on doing some 100yrd accuracy tests and load development and then doing some of the penetration tests that others have done and also against the specs it was first designed for.
There is some really interesting reading on the round here https://en.wikipedia.org/wiki/5.56%C3%9745mm_NATO
At one point the talk about 1.6-2 MOA accuracy and another more like 3-5 MOA so that will be interesting.
BR the round is about 0.9 inches long and from that wikki was meant for use in 1-9 twists which seems very doable. I have a Howa with a 1-9 and have shot 75gr VLD that are stated by Berger to be 1-8 optimal and at 1.063 inch I haven't found a problem as yet in the 1-9.
A interesting point I find is that where the canular is actually makes the round quite short, not what i was expecting given the other information about 5.56 military chambers to be longer. In the Howa at that length it is about 110 thou off the lands. They must have been using a pretty fast powder as they say there was no increased MV from 20 inches to 24. This would also tie in with the requirement to reduce muzzle flash. There are quite a few interesting tid bits in that wiki. Some of the specs / wanted requirements are interesting like being able to pierce a WW2 helmet at 800yrds but with a 2MOA gun the chance of ever hitting a target that size repeatedly or even with any one shot is dreaming. Anyway it will be interesting to see how they perform and if they have any uses in a bolt gun.
They dont sound like a great round overall but only testing will tell.
sungazer wrote:So I had a little play this afternoon with these guys. The results were not quite as bad as I was expecting. I dont like making excuses but I think my scope may have a little problem apart from being a Simmonds that I bought a long time ago and it is like looking through a fish bowl, I never knew how bad it was until getting a good scope.
I started with a load of 23.6 grn 8208 with them jammed 20 thou that group is pretty big and randomish looking at 1.8 inchs. I then moved to 20 thou off and apart from that one wayward shot it was looking pretty good at 0.5 without the stray and out to 1.2 with it. Then the next group is with the SS109 seated to the canular which puts them at 110 thou off for such a VLD shape I thought this may be ok but it has opened up, again at 1.2.
I then shot some Super Roos to see how they compared, I am still looking for a load for them as well. From what I have shot with this Howa 1500 I think it is about a 1 MOA gun often grouping a few shots then popping a few others somewhere else. If it wasn't in a chassis I would think something is moving. (It may be a scope)
The Super Roos grouped best at about 20 thou off at 0.75 inch everything was shot at 120 yrds