|
Joined: Jun 2011
Posts: 1,009
Campfire Regular
|
OP
Campfire Regular
Joined: Jun 2011
Posts: 1,009 |
Looking for load data specific to a 22” 270 WSM. The rifle is being used with a suppressor. What powders are you using and what velocity are you getting. Lastly, accuracy would be a priority above velocity.
|
|
|
|
Joined: Dec 2004
Posts: 17,253 Likes: 1
Campfire Ranger
|
Campfire Ranger
Joined: Dec 2004
Posts: 17,253 Likes: 1 |
I doubt many shooters would use different load data from what is seen in a typical 23-24" barrel. Not enough difference to matter, regarding powder choice and such. With that round, I bet you will be down around 40fps per inch of barrel length below a 24", so probably not even worth sweating. It also wouldn't be uncommon to get back 10-30fps with the use of the can.
Last edited by JPro; 02/07/23.
Now with even more aplomb
|
|
|
|
Joined: Mar 2018
Posts: 1,023
Campfire Regular
|
Campfire Regular
Joined: Mar 2018
Posts: 1,023 |
Probably switch from the slowest powders to the medium burn rate powders. Use the fastest burning powder that meets performance expectations
|
|
|
|
Joined: Jun 2011
Posts: 1,009
Campfire Regular
|
OP
Campfire Regular
Joined: Jun 2011
Posts: 1,009 |
I doubt many shooters would use different load data from what is seen in a typical 23-24" barrel. Not enough difference to matter, regarding powder choice and such. With that round, I bet you will be down around 40fps per inch of barrel length below a 24", so probably not even worth sweating. It also wouldn't be uncommon to get back 10-30fps with the use of the can. Kind of what I assumed. Asked the question to basically see what powders others were using at what velocity and what accuracy they were achieving.
|
|
|
|
Joined: Mar 2018
Posts: 1,023
Campfire Regular
|
Campfire Regular
Joined: Mar 2018
Posts: 1,023 |
Read as many sources of data as possible. It's going to be tough to match lab results. Then decide how many firings per case you want. I've learned to use the minimum possible charges that deliver performance expectations in order to extend case life and get a couple extra rounds per pound of powder. Start with good cases, and a temp stable powder. Sample factory ammo for use as a baseline and try to at least duplicate or approximate it.
|
|
|
|
Joined: Jan 2001
Posts: 5,057
Campfire Tracker
|
Campfire Tracker
Joined: Jan 2001
Posts: 5,057 |
JPro is spot on with this. I load for a 270 WSM with a 24” barrel myself, but I would t expect you to lose more than 100 fps and probably less off your total velocities compared to what a 24” barrel gives you. I’ve played around with a few different powders and so far Magpro and either H4350 or IMR4350 have given me the best results.
|
|
|
|
Joined: Nov 2004
Posts: 865
Campfire Regular
|
Campfire Regular
Joined: Nov 2004
Posts: 865 |
Happy with 140 Accubonds and RL26. 3200fps out of a 24” Tikka. If stuck with a shorter barrel, I’d probably look at 150s.
|
|
|
|
Joined: Apr 2011
Posts: 152,375 Likes: 44
Campfire Savant
|
Campfire Savant
Joined: Apr 2011
Posts: 152,375 Likes: 44 |
140 Accubonds and IMR 4350
|
|
|
|
Joined: Dec 2022
Posts: 14
New Member
|
New Member
Joined: Dec 2022
Posts: 14 |
Reloder 22, 140 Nosler accubond or 140 Sierra gameking, using nosler reloading data. Velocity 3090 FPS out of 23” barrel.
|
|
|
|
Joined: Feb 2017
Posts: 3,344 Likes: 12
Campfire Tracker
|
Campfire Tracker
Joined: Feb 2017
Posts: 3,344 Likes: 12 |
Magpro in mine - 24”. Just use the normal data. Nobody gets the same as published velocity anyway. I’ve had two guns that were basically identical but they had 100 fps difference between them. Like someone said above, go with a faster burning power and run whatever shoots the best in yours. No deer or elk cares about 100 fps anyway.
Yours in Liberty,
BL
|
|
|
|
Joined: Jan 2023
Posts: 17
New Member
|
New Member
Joined: Jan 2023
Posts: 17 |
I like H3831 or R-19, I use 150 grain bullets (Speer SPBT and Partitions) in Kimber Montana. Last time I chrono the Speers I averaged 2900 fps with 60.0 grains R-19
|
|
|
|
Joined: Dec 2002
Posts: 26,097 Likes: 20
Campfire Ranger
|
Campfire Ranger
Joined: Dec 2002
Posts: 26,097 Likes: 20 |
I would start with H4831. Possibly H1000 as a second choice.
The powder which gives highest velocity in a 28 inch barrel will also give highest velocity in a 16 inch barrel.
Albeit with a bit more muzzle flash. And not necessarily the same level of accuraccy
People who choose to brew up their own storms bitch loudest about the rain.
|
|
|
|
Joined: Sep 2009
Posts: 1,290
Campfire Regular
|
Campfire Regular
Joined: Sep 2009
Posts: 1,290 |
I use a max load of H1000 & 140gn Accubonds in my Winchester M70 laminated classic 24" bbl. Velocity averages close to 3000fps.
|
|
|
|
570 members (257Bob, 10gaugemag, 222ND, 160user, 21, 260madman, 47 invisible),
2,647
guests, and
1,280
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums81
Topics1,194,368
Posts18,527,357
Members74,031
|
Most Online11,491 Jul 7th, 2023
|
|
|
|