5.56x42mm

[warriorscholar]

Any chance that BHW will be making the 5.56x42 which from what I'm gathering is dimensionally the same as the upcoming valkyrie? Kinda intrigued about this round for the wife's gun or maybe I'll just get another 243LBC.

[GLSHOOTER]

The Valkyrie is far shorter than a 42 at 1.620. It is the same length as the American 30.

They might chamber for the V. but the only thing it does of note is shoot a 90 at mag length. They bumped the shoulder back for a longer neck after cutting it to allow that. They lost case capacity and the potential velocity of the 22X6.8 we've been shooting for almost five years. The V. will be very slow across the board.

To contrast the 22 Nosler the rebated rim cost them capacity and also limited it to 55,000 psi. The full 45 mm case limited bullet choice to 80s ir less and then you have to choose carefully. Once again the engineering was lacking when the straight 6.8 neck down was staring them in the face. Going to the case used by the HAGAR will remedy this somewhat but HAGAR brass doesn't grow on trees like the 6.8.

Just some thoughts on this one. Food for thought. A 22LBC with a good bolt will be superior to the 6.8 variants be they the Nosler or the LaRue. There are no plans to chamber a 5.56X42 at any time in the future.

Greg

[warriorscholar]

Thanks for the info. I'm only interested in the 22LBC if it can throw 80/90 pills quickly and at mag length otherwise I'll stay with my beloved 243 LBC. I had ran some simulations in my Shooter App and to get the drop and wind deflection on a 90g SMK I had to use a G7 profile. Everything lined up at a muzzle velocity of about 2625fps. The one thing that disnt was the claim of 1300yards SS. I'm throwing the BS flag on that one. #marketing

[GLSHOOTER]

Oct 23, 2017 18:52:04 GMT -8 warriorscholar said:

Thanks for the info. I'm only interested in the 22LBC if it can throw 80/90 pills quickly and at mag length otherwise I'll stay with my beloved 243 LBC. I had ran some simulations in my Shooter App and to get the drop and wind deflection on a 90g SMK I had to use a G7 profile. Everything lined up at a muzzle velocity of about 2625fps. The one thing that disnt was the claim of 1300yards SS. I'm throwing the BS flag on that one. #marketing

I haven't run the numbers but I knew 1300 was strench. Another issue is it really needs a six twist as a seven won't hold a 90. BTW the 5.56X42 was an attempt to build a case around one bullet that did absolutely nothing that couldn't be done with other bullets. It has zero following out in the hinterlands compared to the 22X6.8 that is being used in the coyote and PD fields.

The 22 LBC can sling an 80 PDQ and is usable in available sane twist rates. That being said the 243 LBC is even better at it.

Greg

[warriorscholar]

I didn't know anyone that ran 90g in Service Rifle but I do know it requires 1/6.5 type barrel which will really limit its use in lighter thin jacketed bullets. Of course I don't that is it's market for for this either. I think ill just build the wife a 243LBC and be done.

[GLSHOOTER]

Oct 25, 2017 18:25:10 GMT -8 warriorscholar said:

I didn't know anyone that ran 90g in Service Rifle but I do know it requires 1/6.5 type barrel which will really limit its use in lighter thin jacketed bullets. Of course I don't that is it's market for for this either. I think ill just build the wife a 243LBC and be done.

They run them in SR as they can be loaded single shot. It does preclude using much below a 77 at the shorter lines but for some it is OK. The 80 Hornady,magazine bullet, gets a great deal more attention and they can shoot them across the course whereas the 80 Sierra is reserved for the 600 poke.

The twsit rate in itself on the Valkyrie is going to screw over the shooting reloader to some extent. The 22X6.8 will flat scream a 40 and make little bug holes using a 7 but the V will be fighting a huge jump plus the twist. Robbing case capacity for a niche bullet was crazy. Both the Nolser and the V. missed the boat on this one when the cartridge is already out there in the wild.

The 243 LBC across the board is a far better choice for heavy use and long range work. The 22X6.8 can get it done in most instances and the 22 LBC is a better deal for long bullets to avoid capacity loss at magazine length. With the new bolts from Young driving the Grendel case to maximum performance is now possible and my goodness when you stick them in a bolt gun it's like a lightning strike.

Greg