FishingFool Posted June 28, 2011 Share Posted June 28, 2011 For those that have 18" barrels. What velocities are you getting and with what bullets. I'm anxiously awaiting my next rifle to come in and am playing around with jbm calc to see what my drops are. Thanks Link to comment Share on other sites More sharing options...
fueddy Posted June 28, 2011 Share Posted June 28, 2011 I have a 18inch bbl but different ammo gets you didn't things. I handload my match ammo and get about 2600fps with a 77gr MatchKing. Load Data for reloading says the FPS but they usually use a 20-24inch bbl so it hard to guess where you might be.....just have to shoot it and see Link to comment Share on other sites More sharing options...
Bear1142 Posted June 28, 2011 Share Posted June 28, 2011 I load 69gr. Sierra's to 2,850fps in my 18". Erik Link to comment Share on other sites More sharing options...
Poppa Bear Posted June 28, 2011 Share Posted June 28, 2011 Last fall I shot the same load out of both my 16" and my 24" across my chrono. Memory serves it averaged about 350 fps difference. I believe it was a combination of factors like the 8" of extra length, the 1-7 twist to a 1-9 twist, the 5.56 chamber to a Wylde chamber. Link to comment Share on other sites More sharing options...
benny hill Posted June 28, 2011 Share Posted June 28, 2011 Hornady superformance 75gr. match runs 2726 in my 18" Link to comment Share on other sites More sharing options...
outerlimits Posted June 28, 2011 Share Posted June 28, 2011 2860 for 69's and 3030 for 55's Link to comment Share on other sites More sharing options...
ChristianHE Posted June 28, 2011 Share Posted June 28, 2011 18.5": 2692 avg with Hornady Superformance 168 grainers, 2550 avg with 175 grain hand loads. Link to comment Share on other sites More sharing options...
RBros Posted June 28, 2011 Share Posted June 28, 2011 2890 with 69 SMK's 3200 with 53gr Vmax 3160 with 55gr Vmax Link to comment Share on other sites More sharing options...
Alaskapopo Posted June 28, 2011 Share Posted June 28, 2011 For those that have 18" barrels. What velocities are you getting and with what bullets. I'm anxiously awaiting my next rifle to come in and am playing around with jbm calc to see what my drops are. Thanks Here is my log book with my 18 inch Rogue Hunter from Noveske. Noveske Rogue Hunter Log Book The velocities were as follows. Temperature was 40 degrees. 11-22-10 24.1 N140 77 grain SMK 1. 2568 2. 2591 3. 2605 4. 2600 5. 2591 Average 2591 Spread 37 Power Factor 199.5 3-16-11 Laupa 77 grain bullets Rem 7.5 primer Lake City Brass 24 grains of N140 1. 2543 2. 2507 3. 2553 4. 2538 5. 2552 Average 2538 Spread 46 Accuracy 1.58 Laupa77 N135 21.8 grains 1. 2474 2. 2514 3. 2496 4. 2504 5. 2506 Average 2498 Accuracy 1.04 69 grain Sierra CCI 400 primers LakeCity Brass 25.3 grains of RE15 1. 2540 2. 2649 3. 2603 4. 2631 5. 2609 Average 2606 Spread 91 Accuracy 1.22 55 grain Hornady V match 25.5 grains of H335 CCI primers 1. 2965 2. 3031 3. 2993 4. 2976 5. 3005 Average 2988 spread 55 Accuracy 1.173 4-19-11 Load 21.6 grains of N135 77 grain Sierra SMK Rem match primers Brass not chaffered. 1. 2573 2. 2558 3. 2549 4. 2529 5. 2603 Average 2562 Spread 74 Accuracy 1.28 (10 groups) Load 22.5 grains of H335 Bullet 75 Grain Hornady with Cannular 1. 2456 2. 2526 3. 2560 4. 2517 5. 2504 6. 2488 Average 2508 Spread 104 Accuracy 1.34 (Mixed brass average 1.63) To switch from 170 yard 77 grain zero to 55 grain vmax at 100 yards 5 clicks up 2 clicks left. 5-17-11 Load 1 New Lake City Brass, Federal Match Primers, Lapua 77 grain Scenar bullets loaded to 2.60 OAL. 48 degrees. Powder VV N135 21.8 grains 1. 2508 2. 2534 3. 2531 4. 2534 5. 2529 Average 2527, Spread 25 fps, Power factor 194, Muzzle energy 1091 Average group from 5 5 shot groups fired at 100 yards 1.05 Load 2 Once fired Lake City Brass, Federal Match Primers, Sierra 77 grain SMK loaded to 2.55, Powder VV N135 21.8 grains 50 degrees 1. 2488 2. 2482 3. 2474 4. 2476 5. 2488 Average 2481, Spread 14, Power factor 191, Muzzle energy 1052 Average group from 5 5 shot groups fired at 100 yards .95 Notes: 75 grain Hornady load Hits dead on at 100 yards with gun zeroed at 170 with 77 grain Sierra load (21.8 grains of N135) Lapua bullets hit 2.5 inches high at 100 yards with 170 yard Sierra zero. 3 clicks down to get it on at 100 yards. Shot 5 5 shot groups with the 75 grain Hornady bullet with cannular and the average group size was1.79. Link to comment Share on other sites More sharing options...
AustinT Posted June 29, 2011 Share Posted June 29, 2011 3040 for Hornady 55gr FMJ 2820 for Hornady 75gr BTHP Link to comment Share on other sites More sharing options...
DyNo! Posted June 29, 2011 Share Posted June 29, 2011 (edited) I feel embarrassed to post this: 2525FPS with HDY 75gr OTM & 23.5gr of Varget. Mine must be barely coming out of the rifling. Edited June 29, 2011 by DyNo! Link to comment Share on other sites More sharing options...
Nick Weidhaas Posted July 5, 2011 Share Posted July 5, 2011 18" JP 1:8 bbl: 55gr NBT, 26.2gr H335, CCI srp, mixed brass, 3009fps avg. Factory 75gr Hornady TAP HP, 2648fps avg. Link to comment Share on other sites More sharing options...
ChristianHE Posted July 6, 2011 Share Posted July 6, 2011 18.5": 2692 avg with Hornady Superformance 168 grainers, 2550 avg with 175 grain hand loads. Oh yeah, I forgot, that's a 1 in 10 twist barrel. Didn't specify 5.56 or 7.62 so I didn't assume... Link to comment Share on other sites More sharing options...
StealthyBlagga Posted July 6, 2011 Share Posted July 6, 2011 (edited) 18" BCM 1:8 SS barrel. Once fired PPU brass. 69gr SMK. 23.5gr AA2230. CCI #41 primer. 2.250"OAL. 1250ft altitude. 94degF. Mean Velocity (n=5): 2823fps w/10fps SD. Edited July 6, 2011 by StealthyBlagga Link to comment Share on other sites More sharing options...
ccoker Posted July 6, 2011 Share Posted July 6, 2011 Atlanta Arms 5.56 77g OTM load 2725 16" STI 2775 18" PRI Haven't chronoed a new JP 18" but will tomorrow Link to comment Share on other sites More sharing options...
bgary Posted July 6, 2011 Share Posted July 6, 2011 Black Hills 69gr SMK, 20" JP/CTR-02 = 2797 fps Exactly the same ammo, 18" JP/CTR-02 = 2732 fps (same ammo, same place, same day, same lighting.... only difference was the rifle, and those are the same except for the barrel...) Link to comment Share on other sites More sharing options...
Cap Posted July 10, 2011 Share Posted July 10, 2011 I must be using the wrong powder. Link to comment Share on other sites More sharing options...
djeffers Posted August 1, 2011 Share Posted August 1, 2011 I load 69gr. Sierra's to 2,850fps in my 18". Erik Powder? How much? Link to comment Share on other sites More sharing options...
01 Z06 Posted August 6, 2011 Share Posted August 6, 2011 For those that have 18" barrels. What velocities are you getting and with what bullets. I'm anxiously awaiting my next rifle to come in and am playing around with jbm calc to see what my drops are. Thanks With 77gr SMK I am getting 2700fps with 55gr FMJ I am getting 2900fps Link to comment Share on other sites More sharing options...
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