gunner Posted September 4, 2018 Report Share Posted September 4, 2018 Interesting read , but wonder why if you want as flat load as possible using nite NV? , why not zero at 200 . For instance my 20prac with 23.3 of N133 ( 3652fps ) zero at 200, it then drops 4-1/2" at 300 yards . its only 3/4 " high at 100y . Technically its not flatter but surly suit the intended purposes better ? Cheers Link to comment Share on other sites More sharing options...
Beardog Posted September 4, 2018 Author Report Share Posted September 4, 2018 Fair point. Just been looking at the numbers doing just that. With the NV on the sighting in height is 2” and that with a 200y zero and 3600MV would get me what I’m after. Wouldn’t drop below an inch till 225y. Don’t know if you use a pulsar sight, but hard enough getting a consistent Point of aim and zero at 100y. 200y would be quite difficult I think. With the freeze shot/one shot zeroing it’s slightly easier. Link to comment Share on other sites More sharing options...
treetop Posted September 4, 2018 Report Share Posted September 4, 2018 My 20 prac with 39 gr BLK, with photon extreme Zero at 75 yards then 2nd zero is 220 , 3450 fps gives me 3/5" at 100 , 1" at top of trajectory & 1 1/4" at 250 4.5" drop at 300 but I rarely take quarry at that distance Link to comment Share on other sites More sharing options...
Kevgun Posted September 5, 2018 Report Share Posted September 5, 2018 I use a Drone on my 22.250 50 grain Vmax @ 3500 fps and zero it at 60 yards because its easier to see what your doing on a target at that distance, then it's about an inch high at 100 and back zero at 230 yards, the projectile never gets higher than 1.5 inches throughout it's flight. Link to comment Share on other sites More sharing options...
simonl Posted September 5, 2018 Report Share Posted September 5, 2018 On 8/29/2018 at 5:33 PM, baldie said: If you want flat, switch to 32 grain bullets. You dont have the barrel length to get the speeds you require, with any powder and a 39. The .204 needs a 26" barrel to get the real fast speeds, its overbored. Interestingly enough, the 20 practical will, or certainly a lot closer. @baldieWhy does the 20 prac go quicker? Can't get my head round that Link to comment Share on other sites More sharing options...
Beardog Posted September 16, 2018 Author Report Share Posted September 16, 2018 So today I finally had time to try out some 10x. Started off Loading up 5 lots of four rounds seated at 2.260 with the following loads and groups:- 24.5g .507 24.7g .643 24.9g .752 25.1g. .744 with pulled shot/ without . 317 25.3g .745 I was pleased with the groups. A few hole in holes. I then picked the best groups not just on group tightness but there group pattern and loaded another batch of the two best loads both with different seating depths with the following groups:- 4 rounds at 24.5g seated at 2.260 .646 4 rounds at 24.5g seated at 2.280 .420 4 rounds at 25.1g seated at 2.260 .731 4 rounds at 25.1g seated at 2.280 .584 Interestingly the slightly longer seated bullets both gave a tighter group. All four groups I think if I could of steadied the rifle better would of all gone through the same hole. Not the best weather, a lot of mirage after lunch. But I settled on 25.1g at 2.280. Next was the long range drop measurements. I did three shots and took the average drop. At 250y got a hole in hole! All groups were 1 MOA or just under. 200y drop 1” 250y drop 4.5 in 300y drop 7.5 in Put this data into my ballistic AE app and by trueing the MV it gave me a MV of 3762. I don’t expect that’s what it actually is. Probably slightly less. So a busy day but very happy with the out come. Last job was to put the NV back on rifle and zero. Zeroed 3/4 high, mainly because it’s hard to zero and that was near enough. The NV hight is 2.5” from centre of the chamber to centre of the NV body. With that data inputted into my app it give me a drop of only 2.69” out to 300y. That is very pleasing to me! Job done. Link to comment Share on other sites More sharing options...
Elliott Posted September 17, 2018 Report Share Posted September 17, 2018 Nicely done. Definitely point and squirt out to 300 yards. Just played about with Strelock Pro to see what 7.5" of drop at 300 yards would give me in fps using 39gr Blitz. I get just under 3,500fps. You zeroing at 100 yards? Link to comment Share on other sites More sharing options...
Beardog Posted September 17, 2018 Author Report Share Posted September 17, 2018 Yes 100y. Link to comment Share on other sites More sharing options...
simonl Posted September 17, 2018 Report Share Posted September 17, 2018 2.7" drop @300 yds? So how high above bore is the highest point of the trajectory? Link to comment Share on other sites More sharing options...
Bob57 Posted September 17, 2018 Report Share Posted September 17, 2018 Beardog, rather than relying on a ballistic app I'd try it on a target at 300yds,got a feeling you might find it dropping more than 2.7" if 3/4" high @ 100yd?. Sounds like you're grouping ? Link to comment Share on other sites More sharing options...
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