Thread: Subsonic project

Originally Posted by shooternz

Didn't say the velocity was 1000 fps, Just said it was slow, I was looking for the lowest load for Traill Boss in the .44 mag 6.0 grains would be it,
And you are correct Traill Boss is not the best for accuracy but it is the easiest for subsonic loads in most calibres and I would not recommended it in the
.44 Mag with heavy bullets AP70 is better if it can be found.

What’s a good AP70 load for your 280g bullets ?both sub and deer hunting ?

Originally Posted by The bomb

What’s a good AP70 load for your 280g bullets ?both sub and deer hunting ?

Only tried a few loads with AP 70 don't have enough to do serious load development with it but 7.0 grains went well
velocity was in the 900fps range,
For full power loads I use 2400, Some of my customers use 21.0 grains of 2205 in their Freedom arms revolvers for Handgun Silhouette
I have seen some impressive shooting at 200 metres with that load velocity out of a 7.5" barrel is over 1200 fps.

Originally Posted by shooternz

Only tried a few loads with AP 70 don't have enough to do serious load development with it but 7.0 grains went well
velocity was in the 900fps range,
For full power loads I use 2400, Some of my customers use 21.0 grains of 2205 in their Freedom arms revolvers for Handgun Silhouette
I have seen some impressive shooting at 200 metres with that load velocity out of a 7.5" barrel is over 1200 fps.

I use old ICI Nobel Shotgun Powder No 78 which I have a qty of. Done a lot of load dev for various calibres based on Red Dot data given Red Dot is very close in burnnrate and composition of powder. And Red Dot being the original famous "The Load" powder. You can Google this for details. Been very successful with No78 across Pistol and Rifle calibres. In Rifle the 6 to 13 gn range provides velocity in the 900 to 1800 fps range. E.g. in 303B around 11 gn gives mid 1500s fps and very accurate with @shooternz 215gn GC projectiles. AP70N is in the same performance range I believe, as are other similar Shotgun powders. But please do your own research and careful load dev..I do not use any fillers or packers. I note also that ADI lists reduced velocity load data for some rifle calibres using AS30N. I believe this is very close to Red Dot and the Nobel Powder I use.

Originally Posted by shooternz

Only tried a few loads with AP 70 don't have enough to do serious load development with it but 7.0 grains went well
velocity was in the 900fps range,
For full power loads I use 2400, Some of my customers use 21.0 grains of 2205 in their Freedom arms revolvers for Handgun Silhouette
I have seen some impressive shooting at 200 metres with that load velocity out of a 7.5" barrel is over 1200 fps.

I have used Elmer Keith's favourite .44 Magnum load for years with great success. 245 grain hard cast and 22 grains of 2400, 40mm groups at 100 metres (with Leupold 4x LER) and 1500 fps from my 8-3/8" S&W M29. Cases easy on extraction, unlike the sticky ones I have encountered with other powders. I use either WST or WSF (depending on case capacity) for subsonic loads in all calibres (9mm 147 gr,300 Blackout 220 gr, .308 220 gr).

Originally Posted by gundoc

I have used Elmer Keith's favourite .44 Magnum load for years with great success. 245 grain hard cast and 22 grains of 2400, 40mm groups at 100 metres (with Leupold 4x LER) and 1500 fps from my 8-3/8" S&W M29. Cases easy on extraction, unlike the sticky ones I have encountered with other powders. I use either WST or WSF (depending on case capacity) for subsonic loads in all calibres (9mm 147 gr,300 Blackout 220 gr, .308 220 gr).

Never had 2400 despite reading lots about it. I do however have some each of WST and WSF but have not used any as yet. Are you using published data for them or loads you have developed yourself?

Originally Posted by shooternz

Only tried a few loads with AP 70 don't have enough to do serious load development with it but 7.0 grains went well
velocity was in the 900fps range,
For full power loads I use 2400, Some of my customers use 21.0 grains of 2205 in their Freedom arms revolvers for Handgun Silhouette
I have seen some impressive shooting at 200 metres with that load velocity out of a 7.5" barrel is over 1200 fps.

Thanks will give those a go,will a light crimp hurt?using them in a tube magazine.

Originally Posted by The bomb

Thanks will give those a go,will a light crimp hurt?using them in a tube magazine.

A light crimp is fine just need to roll it in a little so it is flush with the front of the groove so it won't catch when chambering
just run a finger over it you will feel it, don't crimp to much it can damage the bullet,