Reloading Assistance

[dicehorn 38]

LS I give below the estimated drop chart using the Sierra 180 SP using both H414 and N140 - the calculation is based on a scope with 1/4 " clicks. This info comes from my Ballistics AE app.

H414 at m/v 2661 fps

100 yds  zero 2528 fps

200     drop 3.64"  clicks needed  7    fps   2393

300     drop 13.36"    clicks           17   fps  2261

400    drop   29.88"    clicks          29   fps 2132

N140   at m/v 2556 fps

100 yds zero  2492 fps

200     drop 4.12"   clicks 8  needed  fps 2292

300     drop  14.86" clicks 19     fps 2162

400   drop  33.04  clicks 32  fps 2098

So you can see that dialing in an extra one or two clicks is hardly life changing for the operator!!

 

[Lamp_Shy 21]

On 19/01/2018 at 22:35, dicehorn said:

LS I give below the estimated drop chart using the Sierra 180 SP using both H414 and N140 - the calculation is based on a scope with 1/4 " clicks. This info comes from my Ballistics AE app.

H414 at m/v 2661 fps

100 yds  zero 2528 fps

200     drop 3.64"  clicks needed  7    fps   2393

300     drop 13.36"    clicks           17   fps  2261

400    drop   29.88"    clicks          29   fps 2132

N140   at m/v 2556 fps

100 yds zero  2492 fps

200     drop 4.12"   clicks 8  needed  fps 2292

300     drop  14.86" clicks 19     fps 2162

400   drop  33.04  clicks 32  fps 2098

So you can see that dialing in an extra one or two clicks is hardly life changing for the operator!!

 

Thanks, as always, excellent summation DH ?.

I had a go with 48g of 414 yesterday. Remember this is a brand new Xbolt, rifle, new picatinny rail and new QR rings. Zeroed at 50M with 3 rounds, and the picture is 4th, 5th & 6 rounds at 110M. I think I pulled a wee bit at the right shot ?.

The squares are 1", so reasonably happy with first attempt.

 

Edited January 21, 2018 by Lamp_Shy

[dicehorn 38]

Agree LS Nothing wrong with that little group and for normal stalking ranges that will put meat on the table.

You say you may have pulled one of the shots - perhaps you did but also remember if you cant the rifle on a shot it can have the same affect as pulling a shot - I can be guilty of that at times.

Oh finally being pedantic!! A 180 gr into that sized living tree (Spruce?)  could cause its demise. Attached a couple of photos of my target holder with hinged back for easy transit - just make sure your back stop is solid - and not a tree

[Lamp_Shy 21]

7 minutes ago, dicehorn said:

Agree LS Nothing wrong with that little group and for normal stalking ranges that will put meat on the table.

You say you may have pulled one of the shots - perhaps you did but also remember if you cant the rifle on a shot it can have the same affect as pulling a shot - I can be guilty of that at times.

Oh finally being pedantic!! A 180 gr into that sized living tree (Spruce?)  could cause its demise. Attached a couple of photos of my target holder with hinged back for easy transit - just make sure your back stop is solid - and not a tree

Dead tree mate, it's a partially sawn tree stump taken for a large commercial Xmas tree. It was a Douglas fir before it was cut. In fact the forestry took around 100 large trees for Xmas last year. ?

Edited January 21, 2018 by Lamp_Shy

[Lamp_Shy 21]

Thought I'd just add another picture to this thread. This is 49g of H414, in .308 with 180g Sierra SP, flat tail bullet @110yds. I'm reasonably happy with grouping which is around 20 mm. 

Apologies for the target, it's all I had in car   :-(